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Annex A ERS SAR.RAW CCT and EXABYTE FORMAT SPECIFICATIONS.

Document No: ER-IS-EPO-GS-5902.1
Issue: 3.0
Date: August 1, 1998
Prepared by: Ola Grabak
Checked by: H.Laur

TABLE OF CONTENTS

1. INTRODUCTION

1.1 General Structure
1.2 Files Description
1.2.1 Volume Directory File
1.2.2 Leader File
1.2.3 Data Set File
1.2.4 Volume Directory File (update of CCT1)
1.2.5 Data Set File
1.2.6 Null Volume File
1.2.7 Notation conventions
1.2.8 File Class
1.2.9 Data Interpretation
1.2.10 Records in products
1.3 Note

2. VOLUME DIRECTORY FILE FORMAT DEFINITION

3. LEADER FILE FORMAT DEFINITION

4. DATA SET FILE FORMAT DEFINITION

5. NULL VOLUME FORMAT DEFINITION

 

LIST OF TABLES

Table 1 VOLUME DESCRIPTOR RECORD
Table 2 LEADER FILE POINTER RECORD
Table 3 DATA FILE POINTER RECORD
Table 4 TEXT RECORD
Table 5 SAR - LEADER FILE, FILE DESCRIPTOR RECORD
Table 6 RAW DATA SET SUMMARY RECORD
Table 7 RAW PLATFORM POSITION DATA RECORD
Table 8 RAW FACILITY RELATED DATA RECORD [GENERAL TYPE]
Table 9 RAW FACILITY RELATED DATA RECORD PCS TYPE
Table 10 SAR DATA FILE , FILE DESCRIPTOR RECORD (FIXED SEGMENT)
Table 11 IMAGERY OPTIONS FILE - SIGNAL DATA RECORD DEFINITION
Table 12 NULL VOLUME DESCRIPTOR RECORD

1. INTRODUCTION

Sar Raw Data

Acronym: SAR.RAW

Decommutated Raw Sar echos data suitable for input to a processor.

The ESA SAR.RAW format is based on the general definition of the SAR CEOS format (ref. ER-IS-EPO-GS-5902).

The product is stored on two CCTs or one exabyte.

1.1 General Structure

In the case of CCT, the first tape (CCT 1) contains the following three files :

Volume Directory File
Leader File
Data Set File

1.2 Files Description

1.2.1 Volume Directory File:

Volume Descriptor Record

360 bytes

Leader File Pointer Record

360 bytes

Data Set File Pointer Record

360 bytes

Text Record

360 bytes

1.2.2 Leader File:

File Descriptor Record

720 bytes

Data Set Summary Record

1886 bytes

Platform Position Data Record

..... bytes

Facility Related Data Record General Type

12288 bytes

Facility Related Data Record PCS Quality Type

12288 bytes

1.2.3 Data Set File:

File Descriptor Record

11644 bytes

13600 signal data record

11644 bytes

CCT2 contains the following three files:
Volume Directory File
Data Set File
Null Volume File

1.2.4 Volume Directory File (update of CCT1):

Volume descriptor record

360 bytes

Leader file pointer record

360 bytes

Data set file pointer record

360 bytes

Text record

360 bytes

1.2.5 Data Set File:

..... signal data records

11644 bytes

1.2.6 Null Volume File:

Volume Descriptor Record

360 bytes

1.2.7 Notation conventions :

$   .     - the use of the "$"' (dollar sign) in the documentation denotes a requirement for the blank character (ie. the ASCII pt EBCDIC space character).

(n)        - this expression is used to denote the contents of an integer binary field which will vary depending on the product type or data origin and will have to be supplied by the facility generating the tape.

<.....>    i i i - this expression is used to denote the contents of an alphanumeric field, which will vary depending on the product type or data origin and will have to be supplied by the facility generating the tape.

<$...$>        - this expression is used to denote a blank field.

1.2.8 File Class

 

Class Code

Data Type

     

"8$BIT$ASCII$ONLY$$$$$$$$$$$$"

"ASCO"

ASCII only data

"EBCDIC$ONLY$$$$$$$$$$$$$$$$$"

"EBCO"

EBCDIC only

"BCD$ONLY$$$$$$$$$$$$$$$$$$$$"

"BCDO"

BCD only

"BINARY$ONLY$$$$$$$$$$$$$$$$$"

"BINO"

binary only data

"MIXED$BINARY$AND$ASCII$$$$$$"

"MBAA"

binary & ASCII

"MIXED$BINARY$AND$EBCDIC$$$$$"

"MBAE"

binary & EBCDIC

"MIXED$BINARY$AND$BCD$$$$$$$$"

"MBAB"

binary & BCD

"UNDEFINED,$ETC.$$$$$$$$$$$$$"

"UNDF"

undefined

"COMPLEX$$$$$$$$$$$$$$$$$$$$$"

"COMP"

complex

"REAL$$$$$$$$$$$$$$$$$$$$$$$$"

"REAL"

floating point

1.2.9 Data Interpretation

 

Format

Length

     

"INTEGER*1$$$$$$$$$$$$$$$$$$$"

"I*1$"

1 byte wide

"INTEGER*2$$$$$$$$$$$$$$$$$$$"

"I*2$"

2 byte wide

"INTEGER*4$$$$$$$$$$$$$$$$$$$"

"I*4$"

4 byte wide

- one, two and four byte two"s complement integer representation

"SIGNED$INTEGER*1$$$$$$$$$$$$"

"IS1$"

1 byte wide

"SIGNED$INTEGER*2$$$$$$$$$$$$"

"IS2$"

2 byte wide

"SIGNED$INTEGER*4$$$$$$$$$$$$"

"IS4$"

4 byte wide

- one, two and four byte signed integer with the most significant bit used to denote sign

"UNSIGNED$INTEGER*1$$$$$$$$$$"

"IU1$"

1 byte wide

"UNSIGNED$INTEGER*2$$$$$$$$$$"

"IU2$"

2 byte wide

"UNSIGNED$INTEGER*4$$$$$$$$$$"

"IU4$"

4 byte wide

- one, two and four byte unsigned integer with the most significant bit used as part of the pixel value, the pixel is always positive.

"REAL*2$$$$$$$$$$$$$$$$$$$$$$"

"R*2$"

2 byte wide

"REAL*4$$$$$$$$$$$$$$$$$$$$$$"

"R*4$"

4 byte wide

"REAL*8$$$$$$$$$$$$$$$$$$$$$$"

"R*8$"

8 byte wide

- two, four and eight byte two's complement floating point representation with the exponent denoted in two's complement binary.
(note that the REAL*8 representation is the same as double precision.)

"REAL*2$HEXADECIMAL$$$$$$$$$$"

"R*2H"

2 byte wide

"REAL*4$HEXADECIMAL$$$$$$$$$$"

"R*4H"

4 byte wide

"REAL*8$HEXADECIMAL$$$$$$$$$$"

"R*8H"

8 byte wide

- two, four eight byte hexadecimal floating point representation with the exponent denoted as a hexadecimal exponent.
(note that the REAL*8.representation is the same as double precision.)

"COMPLEX*4$$$$$$$$$$$$$$$$$$$"

"C*4$"

4 byte wide

"COMPLEX*8$$$$$$$$$$$$$$$$$$$"

"C*8$"

8 byte wide

- four byte field with the first half (two bytes) containing the two"s complement floating point representation value of the real component and the second half containing the imaginary component.Similarly for the eight byte type, with each half of the field containing the real and imaginary pairs.

"COMPLEX$INTEGER*2$$$$$$$$$$$"

"CI*2"

2 byte wide

"COMPLEX$INTEGER*4$$$$$$$$$$$"

"CI*4"

4 byte wide

"COMPLEX$INTEGER*8$$$$$$$$$$$"

"CI*8"

8 byte wide

- similar to the complex floating point representation above except that each component is stored as a two"s complement integer.

"COMPLEX$SIGNED$INTEGER*2$$$$"

"CIS2"

2 byte wide

"COMPLEX$SIGNED$INTEGER*4$$$$"

"CIS4"

4 byte wide

"COMPLEX$SIGNED$INTEGER*8$$$$"

"CIS8"

8 byte wide

- similar to the complex floating point representation above except that each component is stored as a signed integer.

"COMPLEX*4$HEXADECIMAL$$$$$$$"

"C*4H"

4 byte wide

"COMPLEX*8$HEXADECIMAL$$$$$$$"

"C*8H"

8 byte wide

- same as the floating point complex notation above except that the representation follows the hexadecimal conventions.

1.2.10 Records in products

Volume Directory File

 

CEOS Codes

   

VOLUME DESCRIPTOR RECORD

192,192,18,18

FILE POINTER RECORD

219,192,18,18

TEXT RECORD

18,63,18,18

Leader File

FILE DESCRIPTOR RECORD

63,192,18,18

DATA SET SUMMARY RECORD

10,10,31,20

PLATFORM POSITION DATA RECORD

10,30,31,20

FACILITY RELATED DATA RECORD GENERAL TYPE

10,200,31,50

FACILITY RELATED DATA RECORD PCS QUALITY TYPE

10,200,31,50

SAR Data File

FILE DESCRIPTOR RECORD

63,192,18,18

RAW SIGNAL DATA RECORD

50,10,31,20

Null Volume

NULL VOLUME DESCRIPTOR RECORD

192,192,63,18

 

1.3 Note:

Fields not provided are treated as follows: (for a case of a field 8 bytes long)

Field type

Format

Filler

     

alphanumeric

A8

8 blanks

numeric integer

Iw

-9999999

numeric floating point

F8.2

-9999.99

numeric exponential

E8.2

-9999.99E-99

 

WARNING: Please be aware that the field "Example with RAW product" in the following tables, contains only an EXAMPLE of what can be found in a product.

 

2. VOLUME DIRECTORY FILE FORMAT DEFINITION

Table 1: VOLUME DESCRIPTOR RECORD

FIELD

BYTES

FORMAT

DESCRIPTION

 

EXAMPLE with

RAW product

UNITS

 

1

1-4

B4

Record Sequence Number

1

 

2

5-5

B1

1st record sub-type code

192

 

3

6-6

B1

Record type code

192

 

4

7-7

B1

2nd record sub-type code

18

 

5

8-8

B1

3rd record sub-type code

18

 

6

9-12

B4

Length of this record

360

 

7

13-14

A2

ASCII/EBCDIC Flag

A

 

8

15-16

A2

Blanks

   

9

17-28

A12

Format control document

CCB-CCT-0002

 

10

29-30

A2

Superstructure format control document

E

 

11

31-32

A2

Superstructure record format revision

A

 

12

33-44

A12

Logical volume generating facility software release and revision level

ERS2-RAW-6.2

 

13

45-60

A16

ID of physical volume containing this volume descriptor

1

 

14

61-76

A16

Logical volume identifier

0003792600087854

 

15

77-92

A16

Volume set identifier

199712 2 451 828

 

16

93-94

I2

Total number of physical volumes in the logical volume

1

 

17

95-96

I2

Physical volume sequence number of the first tape within the logical volume

1

 

18

97-98

I2

Physical volume sequence number of the last tape within the logical volume

1

 

19

99-100

I2

Physical voluem sequence number of current tape within the logical volume

1

 

20

101-104

I4

First referenced file number in this physical volume within the logical volume.

1

 

21

105-108

I4

Logical volume number within volume set

1

 

22

109-112

I4

Logical volume number within physical volume

1

 

23

113-120

A8

Logical volume creation date (YYYYMMDD)

19980508

 

24

121-128

A8

Logical volume creation time (HHMMSSDD, DD=deci-seconds) (DD not provided)

08383523

 

25

129-140

A12

Logical volume generation country(GERMANY, ENGLAND, ITALY)

GERMANY

 

26

141-148

A8

Logical volume generating agency

ESA

 

27

149-160

A12

Logical volume generating facility(D-PAF,UK-PAF, IPAF(ASI), ES, ,MS, KS, FS)

D-PAF

 

28

161-164

I4

Number of pointer records in volume directory

2

 

29

165-168

I4

Number of records in volume directory

4

 

30

169-172

I4

Total number of logical volumes in the set

1

 

31

173-260

A88

Volume descriptor spare segment

   

32

261-360

A100

Local use segment

   

 

Table 2: LEADER FILE POINTER RECORD

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1-4

B4

Record sequence number

2

 

2

5-5

B1

1st record sub-type code

219

 

3

6-6

B1

Record type code

192

 

4

7-7

B1

2nd record sub-type code

18

 

5

8-8

B1

3rd record sub-type code

18

 

6

9-12

B4

Length of this record

360

 

7

13-14

A2

ASCII/EBCDIC Flag

A

 

8

15-16

A2

Blanks

   

9

17-20

I4

Referenced file number

1

 

10

21-36

A16

Referenced file name

ERS2.SAR.RAWLEAD

 

11

37-64

A28

Referenced file class

SARLEADER FILE

 

12

65-68

A4

Referenced file class code

SARL

 

13

69-96

A28

Referenced file data type

MIXED BINARY AND ASCII

 

14

97-100

A4

Referenced file data type code

MBAA

 

15

101-108

I8

Number of records in referenced file

5

 

16

109-116

I8

Referenced file - descriptor record length

720

 

17

117-124

I8

Referenced file maximum record length

12288

 

18

125-136

A12

Referenced file record length type

VARIABLE LEN

 

19

137-140

A4

Referenced file record length type code

VARE

 

20

141-142

I2

Referenced file physical volume start number

1

 

21

143-144

I2

Referenced file physical volume end number

1

 

22

145-152

I8

Referenced file portion start, 1st record number for this physical volume

1

 

23

153-160

I8

Referenced file portion end, last record number for this physical volume

5

 

24

161-260

A100

File pointer spare segment

   

25

261-360

A100

Local use segment

   

 

Table 3: DATA FILE POINTER RECORD

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1-4

B4

Record number

3

 

2

5

Bl

1-st record subtype code

219

 

3

6

Bl

record type code

192

 

4

7

Bl

2-nd subtype code

18

 

5

8

B1

3-rd subtype code

18

 

6

9-12

B4

Length of this record

360

 

7

13-14

A2

ASCII/EBCDIC flag for referenced file

A

 

8

15-16

A2

Blank

   

9

17-20

I4

Referenced file number

2

 

10

21-36

A16

Referenced file name

ERS2.SAR.RAWIMGY

 

11

37-64

A28

Referenced file class

IMAGERY OPTIONS FILE

 

12

65-68

A4

Referenced file class code

IMOP

 

13

69-96

A28

Referenced file data type

MIXED BINARY AND ASCII

 

14

97-100

A4

Referenced file data type code

MBAA

 

15

101-108

I8

Number of records in referenced file (variable)

28001

 

16

109-116

I8

Referenced file 1-st record length

11644

 

17

117-124

I8

Referenced file maximum record length

11644

 

18

125-136

A12

Referenced file record length type

FIXED LENGTH

 

19

137-140

A4

Referenced file record length type code

FIXD

 

20

141-142

I2

Referenced file physical volume start number

1

 

21

143-144

I2

Referenced file physical volume end number

1

 

22

145-152

I8

Referenced file portion start, 1-st record number for this physical volume

1

 

23

153-160

I8

Referenced file portion end, last record number for this physical volume (variable)

28001

 

24

161-260

Al00

File pointer spare segment

   

25

261-360

Al00

Local use segment

   

 

Table 4: TEXT RECORD

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1-4

B4

Record sequence number

4

 

2

5-5

B1

1st record sub-type code

18

 

3

6-6

B1

Record type code

63

 

4

7-7

B1

2nd record sub-type code

18

 

5

8-8

B1

3rd record sub-type code

18

 

6

9-12

B4

Length of this record

360

 

7

13-14

A2

ASCII/EBCDIC Flag

A

 

8

15-16

A2

Continuation flag (*)

   

9

17-56

A40

Product type specifier

PRODUCT:ERS-2.SAR.RAW

 

10

57-116

A60

Location and date/time of product creation#

GENERATED AT D-PAF 8-MAY-1998 10:17:13.580

 

11

117-156

A40

Physical volume identification#

Tape 1/1 VOL-ID 176

 

12

157-196

A40

Scene identification#

ORBIT 13686 DATE 2-DEC-1997 4:51: 8

 

13

197-236

A40

Scene location#

FRAME 2840 LAT: 537.93 LON: 87.85

 

14

237-256

A20

Spares

   

15

257-360

A104

Spares

   

(*) this field is set to "C$" if information is continued on the next text record (if any).

 

3. LEADER FILE FORMAT DEFINITION

Table 5: SAR - LEADER FILE, FILE DESCRIPTOR RECORD

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1-4

B4

Record Sequence Number

1

 

2

5

B1

1st record sub-type code

63

 

3

6

B1

Record type code

192

 

4

7

B1

2nd record sub-type code

18

 

5

8

B1

3rd record sub-type code

18

 

6

9-12

B4

Length of this record

720

 

7

13-14

A2

ASCII/EBCDIC Flag

A

 

8

15-16

A2

Blanks

   

9

17-28

A12

Format control document ID for this data file format

CEOS-SAR-CCT

 

10

29-30

A2

Format control document revision level

B

 

11

31-32

A2

File design descriptor revision letter

B

 

12

33-44

A12

Generating software release and revision level

ERS2-RAW-6.2

 

13

45-48

I4

File number

1

 

14

49-64

A16

File name

ERS2.SAR.RAWLEAD

 

15

65-68

A4

Record sequence and location type flag

FSEQ

 

16

69-76

I8

Sequence number location

1

 

17

77-80

I4

Sequence number field length

4

 

18

81-84

A4

Record Code and location type flag

FTYP

 

19

85-92

I8

Record code location

5

 

20

93-96

I4

Record code field length

4

 

21

97-100

A4

Record length and location type flag

FLGT

 

22

101-108

I8

Record length location

9

 

23

109-112

I4

Record length field length

4

 

24-27

113-116

A1

Reserved

   

28

117-180

A64

Reserved segment

   

29

181-186

I6

Number of data set summary records

1

 

30

187-192

I6

Data set summary record length

1886

 

31

193-198

I6

Number of map projection data records

0

 

32

199-204

I6

Map projection record length

0

 

33

205-210

I6

Number of platform pos. data records

1

 

34

211-216

I6

Platform position record length

1046

 

35

217-222

I6

Number of attitude data records

0

 

36

223-228

I6

Attitude data record length

0

 

37

229-234

I6

Number of radiometric data records

0

 

38

235-240

I6

Radiometric record length

0

 

39

241-246

I6

Number of rad. compensation records

0

 

40

247-252

I6

Radiometric compensation rec. length

0

 

41

253-258

I6

Number of data quality summary records

0

 

42

259-264

I6

Data quality summary record length

0

 

43

265-270

I6

Number of data histograms records

0

 

44

271-276

I6

Data histogram record length

0

 

45

277-282

I6

Number of range spectra records

0

 

46

283-288

I6

Range spectra record length

0

 

47

289-294

I6

Number of DEM descriptor records

0

 

48

295-300

I6

DEM descriptor record length

0

 

49

301-306

I6

Number of radar par. update records

0

 

50

307-312

I6

Radar par. update record length

0

 

51

313-318

I6

Number of annotation data records

0

 

52

319-324

I6

Annotation data record length

0

 

53

325-330

I6

Number of det.processing records

0

 

54

331-336

I6

Det.processing record length

0

 

55

337-342

I6

Number of calibration records

0

 

56

343-348

I6

Calibration record length

0

 

57

349-354

I6

Number of GCP records

0

 

58

355-360

I6

GCP record length

0

 

59-68

361-420

I6

Spare(60 blanks)

   

69

421-426

I6

Number of facility data records

2

 

70

427-432

I6

Facility data record maximum length

12288

 

71

433-720

A2

Blanks

   

 

Table 6: RAW DATA SET SUMMARY RECORD

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1 - 4

B4

Record sequence number

2

 

2

5

B1

1-st record sub-type code

10

 

3

6

B1

Record-type code

10

 

4

7

B1

2 nd record sub-type code

31

 

5

8

B1

3 rd record sub-type code

20

 

6

9-12

B4

Length of this record

1886

 

7

13-16

I4

Data Set Summary Record sequence number (starts at 1)

1

 
SCENE PARAMETERS

8

17-20

I4

SAR channel indicator

1

 

9

21-36

A16

Reserved

   

10

37-68

A32

Scene reference number (e.g. orbit - frame number)

ORBIT=13686-FRAME=2840

 

11

69-100

A32

Scene centre time (UTC)

<YYYYMMDDhhmmssttt$$$$$$$$$$$$$>

19971202045116622

 

12

101-116

A16

Spare

   

13

117-132

F16.7

Processed scene centre geodetic latitude

(positive for North latitude, negative for South latitude)

37.926

 

14

133-148

F16.7

Processed scene centre longitude

87.854

degrees

15

149-164

F16.7

Processed scene centre true heading (Not provided by the VMP)

-9999999.9999999

degrees

16

165-180

A16

Ellipsoid designator

GEM6

 

17

181-196

F16.7

Ellipsoid semimajor axis

6378.144

km

18

197-212

F16.7

Ellipsoid semiminor axis

6356.759

km

19

213-228

F16.7

Earth mass times gravitational constant (M . G)

3.9860044

kg.m/s2

20

229-244

A16

Spare

   

21

245-260

F16.7

Ellipsoid J2 parameter

1082.28

 

22

261-276

F16.7

Ellipsoid J3 parameter

-2.30

 

23

277-292

F16.7

Ellipsoid J4 parameter

-0.20

 

24

293-308

A16

Spare

   

25

309-324

F16.7

Reserved

 

m

26

325-332

I8

Scene centre line number

(the line number at the scene centre including zero fill)

00014000

 

27

333-340

I8

Scene centre pixel number

(the pixel number at the scene centre including zero fill)

0002808

 

28

341-356

F16.7

Processed scene length including zero fill

111.440

km

29

357-372

F16.7

Scene width including zero fill

44.3888640

km

30

373-388

A16

Spare

   
GENERAL MISSION / SENSOR PARAMETERS

31

389-392

I4

Number of SAR channels

0001

 

32

393-396

A4

Spare

   

33

397-412

A16

Sensor platform mission identifier

ERS2

 

34

413-444

A32

Sensor ID and mode of operation for this channel

<AAAAAA-BB-CC-DD-EF> where :

AAAAAA = sensor identifier; BB = SAR band;

CC = resolution mode code; DD = imaging mode code;

E = transmit polarisation; F = receiver polarisation

SAR- C-HR-IM-VV

 

35

445-452

A8

Orbit number

13686

 

36

453-460

F8.3

Sensor platform geodetic latitude at nadir

corresponding to scene centre (positive for North latitude)

37.186

degrees

37

461-468

F8.3

Sensor platform longitude at nadir

corresponding to scene centre (negative for West longitude)

91.230

degrees

38

469-476

F8.3

Sensor platform heading at nadir corresponding to scene centre

(clockwise positive from North)

193.840

degrees

39

477-484

F8.3

Sensor clock angle as measured relative to sensor platform flight direction

90

degrees

40

485-492

F8.3

Incidence angle at scene centre

23.720

degrees

41

493-500

F8.3

Radar frequency

5.3

GHz

42

501-516

F16.7

Radar wavelength

0.056666

metres

43

517-518

A2

Motion compensation indicator

"00" = no compensation, "01" = on board compensation, "10" = in processor compensation, "11" = both on board and in processor

00

 

44

519-534

A16

Range pulse code specifier

LINEAR FM CHIRP

 

45

535-550

E16.7

Nominal range pulse (chirp) amplitude coefficient, Constant term

1.0E+00

 

46

551-566

E16.7

Nominal range pulse (chirp) amplitude coefficient, Linear term

0.0E+00

sec-1

47

567-582

E16.7

Nominal range pulse (chirp) amplitude coefficient, Quadratic term

0.0E+00

sec-2

48

583-598

E16.7

Nominal range pulse (chirp) amplitude coefficient, Cubic term

0.0E+00

sec-3

49

599-614

E16.7

Nominal range pulse (chirp) amplitude coefficient, Quartic term

0.0E+00

sec-4

50

615-630

E16.7

Nominal range pulse (chirp) phase coefficient, Constant term

0.0E+00

cycles

51

631-646

E16.7

Nominal range pulse (chirp) phase coefficient, Linear term

0.0E+00

Hz

52

647-662

E16.7

Nominal range pulse (chirp) phase coefficient, Quadratic term

2.0889E+11

Hz/sec

53

663-678

E16.7

Nominal range pulse (chirp) phase coefficient, Cubic term

0.0E+00

Hz/sec2

54

679-694

E16.7

Nominal range pulse (chirp) phase coefficient, Quartic term

0.0E+00

Hz/sec3

55

695-702

I8

Down linked chirp extraction index

29

samples

56

703-710

A8

Spare

   

57

711-726

F16.7

Range sampling rate

18.9624680

MHz

58

727-742

F16.7

Range gate delay at early edge (in time) at the start of the image

 

msec

59

743-758

F16.7

Range pulse length

37.12

m sec

60

759-762

A4

Reserved

   

61

763-766

A4

Range compressed flag (YES = range compressed data)

NO

 

62-63

767-798

2 F16.7

Reserved

   

64

799-806

I8

Quantization per channel I & Q

00000005

bits

65

807-818

A12

Quantizer descriptor

UNIFORM I Q

 

66

819-834

F16.7

DC Bias for I-component (actual value)

-0.02

 

67

835-850

F16.7

DC Bias for Q-component (actual value)

0.02

 

68

851-866

F16.7

Gain imbalance for I & Q (actual value) (Not provided by the VMP)

-9999999.9999999

 

69-70

867-898

A32

Spare

   

71

899-914

F16.7

Reserved

   

72

915-930

F16.7

Antenna mechanical boresight angle relative to platform vertical axis

20.355

degrees

73

931-934

A4

Reserved

   

74

935-950

F16.7

Pulse Repetition Frequency (PRF) (actual value)

1679.902

Hz

75-76

951-982

F16.7

Reserved

   
SENSOR SPECIFIC PARAMETERS

77

983-998

I16

Satellite encoded binary time code

3976440323

 

78

999-1030

A32

Satellite clock time (UTC)

<YYYYMMDDhhmmssttt$$$...$>

19971202061758632

 

79

1031-1038

I8

Satellite clock step length

3906250

nanosec

80

1039-1046

A8

Spare

   
GENERAL PROCESSING PARAMETERS

81

1047-1062

A16

Processing facility identifier (D-PAF, UK-PAF, ES)

D-PAF

 

82

1063-1070

A8

Processing system identifier (VMP for D-PAF, UK-PAF and ES)

VMP

 

83

1071-1078

A8

Processing version identifier

6.2

 

84-85

1079-1110

A16

Reserved

   

86

1111-1142

A32

Product type specifier

SAR RAW

SIGNAL DATA

 

87

1143-1174

A32

Processing algorithm identifier (Not relevant for the RAW product)

   

88

1175-1190

F16.7

Nominal number of looks processed in azimuth (Not relevant for the RAW product)

-9999999.9999999

looks

89

1191-1206

F16.7

Nominal number of looks processed in range (Not relevant for the RAW product)

-9999999.9999999

looks

90

1207-1222

F16.7

Bandwidth per look in azimuth (null-to-null) (Not relevant for the RAW product)

-9999999.9999999

Hz

91

1223-1238

F16.7

Bandwidth per look in range (Not relevant for the RAW product)

-9999999.9999999

MHz

92

1239-1254

F16.7

Total processor bandwidth in azimuth (Not relevant for the RAW product)

-9999999.9999999

Hz

93

1255-1270

F16.7

Total processor bandwidth in range (Not relevant for the RAW product)

-9999999.9999999

MHz

94

1271-1302

A32

Weighting function designator in azimuth (Not relevant for the RAW product)

   

95

1303-1334

A32

Weighting function designator in range (Not relevant for the RAW product)

   

96

1335-1350

A16

Data input source

HDDT

 

97

1351-1366

F16.7

Nominal resolution in range (3-dB width) (Not relevant for the RAW product)

-9999999.9999999

m

98

1367-1382

F16.7

Nominal resolution in azimuth (3-dB width) (Not relevant for the RAW product)

-9999999.9999999

m

99

1383-1398

A32

Reserved

   

100

1399-1414

A32

Reserved

   

101

1415-1430

F16.7

Along track Doppler frequency centroid at early edge of image, Constant term (Not provided for the RAW product)

-9999999.9999999

Hz

102

1431-1446

F16.7

Along track Doppler frequency centroid at early edge of image, Linear term (Not provided for the RAW product)

-9999999.9999999

Hz/sec

103

1447-1462

F16.7

Along track Doppler frequency centroid at early edge of image, Quadratic term (Not provided for the RAW product)

-9999999.9999999

Hz/sec2

104

1463-1478

A16

Spare

   

105

1479-1494

F16.7

Cross track Doppler frequency centroid at early edge of image, Constant term (Not provided for the RAW product)

-9999999.9999999

Hz

106

1495-1510

F16.7

Cross track Doppler frequency centroid at early edge of image, Linear term (Not provided for the RAW product)

-9999999.9999999

Hz/sec

107

1511-1526

F16.7

Cross track Doppler frequency centroid at early edge of image, Quadratic term (Not provided for the RAW product)

-9999999.9999999

Hz/sec2

108

1527-1534

A8

Time direction indicator along pixel direction

INCREASE

 

109

1535-1542

A8

Time direction indicator along line direction

INCREASE

 

110

1543-1558

F16.7

Along track Doppler frequency rate at early edge of image, Constant term (Not provided for the RAW product)

-9999999.9999999

Hz/sec

111

1559-1574

F16.7

Along track Doppler frequency rate at early edge of image, Linear term (Not provided for the RAW product)

-9999999.9999999

Hz/sec2

112

1575-1590

F16.7

Along track Doppler frequency rate at early edge of image, Quadratic term (Not provided for the RAW product)

-9999999.9999999

Hz/sec3

113

1591-1606

A16

Spare

   

114

1607-1622

F16.7

Cross track Doppler frequency rate at early edge of image, Constant term (Not provided for the RAW product)

-9999999.9999999

Hz/sec

115

1623-1638

F16.7

Cross track Doppler frequency rate at early edge of image, Linear term (Not provided for the RAW product)

-9999999.9999999

Hz/sec2

116

1639-1654

F16.7

Cross track Doppler frequency rate at early edge of image, Quadratic term (Not provided for the RAW product)

-9999999.9999999

Hz/sec3

117

1655-1670

A16

Spare

   

118

1671-1678

A8

Line content indicator

RANGE

 

119

1679-1682

A4

Clutterlock applied flag

NOT

 

120

1683-1686

A4

Autofocussing applied flag

NOT

 

121

1687-1702

F16.7

Line spacing

3.980

m

122

1703-1718

F16.7

Pixel spacing

7.904

m

123

1719-1734

A16

Processor range compression designator (Not provided for the RAW product)

   

124

1735-1750

A16

Spare

   

125

1751-1766

A16

Spare

   
SENSOR SPECIFIC LOCAL USE SEGMENT

126/1

1767-1782

F16.7

Zero-doppler range time (two-way) of first range pixel

5.5410340

millisec

126/2

1783-1798

F16.7

Zero-doppler range time (two-way) of centre range pixel

5.6891160

millisec

126/3

1799-1814

F16.7

Zero-doppler range time (two-way) of last range pixel

5.8371980

millisec

126/4

1815-1838

A24

Zero-doppler azimuth time of first azimuth pixel (UTC)

<dd-MMM-yyyy hh:mm:ss.ttt>

02-DEC-1997

04:51:08.289

 

126/5

1839-1862

A24

Zero-doppler azimuth time of centre azimuth pixel (UTC)

<dd-MMM-yyyy hh:mm:ss.ttt>

02-DEC-1997

04:51:16.622

 

126/6

1863-1886

A24

Zero-doppler azimuth time of last azimuth pixel (UTC)

<dd-MMM-yyyy hh:mm:ss.ttt>

02-DEC-1997

04:51:24.956

 

 

Table 7: RAW PLATFORM POSITION DATA RECORD

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1 - 4

B4

Record sequence number

3

 

2

5

B1

1-st record sub-type code

10

 

3

6

B1

Record-type code

30

 

4

7

B1

2 nd record sub-type code

31

 

5

8

B1

3 rd record sub-type code

20

 

6

9-12

B4

Length of this record (not fixed length)

1046

 

7

13-44

A32

Reserved

   

8 to 13

45-140

6 F16.7

Reserved

   
POSITIONAL DATA POINTS

14

141-144

I4

Number of data points (always 5 for the VMP)

5

 

15

145-148

I4

Year of data point <YYYY>

1997

 

16

149-152

I4

Month of data point <$$MM>

0012

 

17

153-156

I4

Day of data point <$$DD>

02

 

18

157-160

I4

Day in the year <GMT> (1st January = Day 1)

0336

 

19

161-182

E22.15

Seconds of day of data

7.805732E+04

sec

20

183-204

E22.15

Time interval between data points

4.018E+00

sec

21

205-268

A64

Reference coordinate system

Earth Centred Rotating

 

22

269-290

E22.15

Greenwich mean hour angle (Not provided by the VMP)

-99999..99E-99

degrees

23

291-306

F16.7

Along track position error (Not provided by the VMP)

-9999999.9999999

metres

24

307-322

F16.7

Across track position error (Not provided by the VMP)

-9999999.9999999

metres

25

323-338

F16.7

Radial position error (Not provided by the VMP)

-9999999.9999999

metres

26-28

339-386

F16.7

Reserved

   
FIRST POSITIONAL DATA POINT

29

387-408

D22.15

1st data point - Position vector X

4.4599626E+06

m

 

409-430

D22.15

1st data point - Position vector Y

1.093685E+05

m

 

431-452

D22.15

1st data point - Position vector Z

5.59626963E+06

m

30

453-474

D22.15

1st data point - Velocity vector X'

-5.61894961E+03

m/s

 

475-496

D22.15

1st data point - Velocity vector Y'

-2.2451222E+03

m/s

 

497-518

D22.15

1st data point - Velocity vector Z'

4.5109856E+03

m/s

SECOND POSITIONAL DATA POINT

31

519-540

D22.15

2nd data point - Position vector X

4.43734455E+06

m

 

541-562

D22.15

2nd data point - Position vector Y

1.0035342E+05

m

 

563-584

D22.15

2nd data point - Position vector Z

5.61434529E+06

m

32

585-606

D22.15

2nd data point - Velocity vector X'

-5.639553E+03

m/s

 

607-628

D22.15

2nd data point - Velocity vector Y'

-2.24227818E+03

m/s

 

629-650

D22.15

2nd data point - Velocity vector Z'

4.48649896E+03

m/s

33-

EOR

 

Blanks

   
Repetition of fields 29-30 as specified by the number of points in field 14 (usually 5 or 6 data points)

 

Table 8: RAW FACILITY RELATED DATA RECORD [GENERAL TYPE]

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1 - 4

B4

Record sequence number

4

 

2

5

B1

1-st record sub-type code

10

 

3

6

B1

Record-type code

200

 

4

7

B1

2 nd record sub-type code

31

 

5

8

B1

3 rd record sub-type code

50

 

6

9-12

B4

Length of this record

12288

 

7

13-76

A64

Name of this facility related data record

FACILITY RELATED DATA RECORD [ESA GENERAL TYPE]

 
SIGNAL DATA QUALITY

8

77-82

A6

Date of last release of QC software (Not relevant for the RAW product)

   

9

83-84

A2

Spare

   

10

85-90

A6

Date of the last calibration update <YYMMDD> (Not relevant for the RAW product)

   

11

91-94

I4

Overall QA summary flag (Sum of the next 9 following flags)

0

 

12

95-98

I4

PRF code change flag (0 = PRF constant in scene)

0

 

13

99-102

I4

Sampling window start time change flag (0 = SWST constant)

0

 

14

103-106

I4

Cal. system & receiver gain change flag (0 = Cal/Rx gain constant)

0

 

15

107-110

I4

Chirp replica quality flag (0 = Replica XCF in limits)

0

 

16

111-114

I4

Input data statistics flag (0 = Raw data mean & sd in limits)

0

 

17

115-118

I4

Doppler centroid confidence measure flag (0 = in limits)

0

 

18

119-122

I4

Doppler centroid value (0 = Dopp-centroid less than PRF/2)

0

 

19

123-126

I4

Doppler ambiguity confidence measure flag (0 = in limits)

0

 

20

127-130

I4

Output data Mean flag (0 = Image mean or sd in limits)

0

 

21

131-134

I4

On ground / on board range compressed flag (0 = OGRC,1=OBRC)

0

 

22

135-138

I4

Number of PRF code changes

0

 

23

139-142

I4

Number of sampling window time changes

0

 

24

143-146

I4

Number of calibration subsystems gain changes

0

 

25

147-150

I4

Number of missing lines (i.e. raw data input lines)

0

 

26

151-154

I4

Number of receiver gain changes

0

 

27

155-170

F16.7

3-dB width of Cross Correlation Function (CCF) between first extracted chirp and nominal chirp [for Bangkok processor this is the CCF between best extracted chirp and nominal chirp]

1.142

samples

28

171-186

F16.7

First side lobe level of chirp CCF

-9.639

dB

29

187-202

F16.7

ISLR of chirp CCF

-6.922

dB

30

203-218

F16.7

Doppler centroid confidence measure

(value normalized such that it takes a value of zero for the best case and a value of one for the worst case)

0.0

 

31

219-234

F16.7

Doppler ambiguity confidence measure

(value normalized such that it takes a value of one for the best case and a value of zero for the worst case)

0.0

 

32

235-250

F16.7

Estimated mean of I input data (once the nominal bias of 15.5 has been applied)

-0.020

 

33

251-266

F16.7

Estimated mean of Q input data (once the nominal bias of 15.5 has been applied)

0.020

 

34

267-282

F16.7

Estimated standard deviation of I input data

3.302

 

35

283-298

F16.7

Estimated standard deviation of Q input data

3.305

 

36

299-314

F16.7

Calibration system gain of first processed line (telemetry value)

7

 

37

315-330

F16.7

Receiver gain of first processed line (telemetry value)

19

 

38

331-346

F16.7

Doppler ambiguity number

0

 

39

347-362

A16

Spare

   
CALIBRATION INFORMATION

40

363-378

F16.7

Bias correction applied to I channel (to be added to the nominal bias)

0.02

 

41

379-394

F16.7

Bias correction applied to Q channel (to be added to the nominal bias)

-0.02

 

42

395-410

F16.7

I/Q gain imbalance correction (applied to I channel)

1.0

 

43

411-426

F16.7

I/Q gain imbalance correction (applied to Q channel)

0.998

 

44

427-442

F16.7

I/Q non-orthogonality correction (applied to Q channel)

0.348

 

45

443-458

A16

Spare

   

46

459-474

F16.7

Noise power per sample (Not provided by the VMP)

-9999999.9999999

 

47

475-490

I16

Calibration pulse time delay (Not provided by the VMP)

-9999999.9999999

nanosec

48

491-494

I4

Number of valid calibration pulses (0 for the VMP)

0

pulses

49

495-498

I4

Number of valid noise pulses (0 for the VMP)

0

pulses

50

499-502

I4

Number of valid replica pulses

1

pulses

51

503-518

F16.7

First sample in replica (Chirp extraction index)

30

samples

52

519-534

F16.7

Mean calibration pulse power (Not provided by the VMP)

-9999999.9999999

 

53

535-550

F16.7

Mean noise pulse power (Not provided by the VMP)

-9999999.9999999

 

54

551-566

F16.7

Range compression normalisation factor

12055352.0

 

55

567-582

F16.7

Replica pulse power

111403.0

 

56

583-598

F16.7

Incidence angle at first range pixel (at mid-azimuth)

19.335

degrees

57

599-614

F16.7

Incidence angle at centre range pixel (at mid-azimuth)

23.720

degrees

58

615-630

F16.7

Incidence angle at last range pixel (at mid-azimuth)

27.249

degrees

59

631-646

F16.7

Slant range reference (for range spreading loss compensation)

847.0

km

60

647-658

A12

Spare

   

61

659-662

I4

Antenna pattern correction flag (0 = no correction)

0

 

62

663-678

F16.7

Absolute calibration constant K ( scalar ) (Not provided for the RAW product)

-9999999.9999999

 

63

679-694

F16.7

Upper bound calibration constant K ( + 0.75 dB) (Not provided for the RAW product)

-9999999.9999999

 

64

695-710

F16.7

Lower bound calibration constant K ( - 0.75 dB) (Not provided for the RAW product)

-9999999.9999999

 

65

711-726

F16.7

Estimated noise equivalent s o (Not provided for the RAW product)

-9999999.9999999

dB

66

727-732

A6

Date on which K was generated as YYMMDD (Not provided for the RAW product)

   

67

733-736

A4

K version number as XXYY,

where XX refers to a K update implemented across the ground segment and YY refers to an upgrade only at the source facility (as may arise in case of local software updates) (Not provided for the RAW product)

   
VARIOUS PARAMETERS (from SPH fields)

68

737-740

I4

Number of duplicated input lines (Not provided by the VMP)

-999

 

69

741-756

F16.7

Estimated bit error rate (Not provided by the VMP)

-9999999.9999999

 

70

757-768

A12

Spare

   

71

769-784

F16.7

Output image mean (Not provided for the RAW product)

-9999999.9999999

 

72

785-800

F16.7

Output image standard deviation (Not provided for the RAW product)

-9999999.9999999

 

73

801-816

F16.7

Output image maximum value (Not provided for the RAW product)

-9999999.9999999

 

74

817-840

A24

Time of raw data first input range line (UTC)

<dd-MMM-yyyy hh:mm:ss.ttt>

2-DEC-1997 4:51: 8.289

 

75

841-864

A24

Time of ascending node state vector (UTC)

   

76 to 81

865-996

6 D22.15

Ascending node state vectors (X,Y,Z,X',Y',Z')

0,0,0,0,0,0

m & m/s

82

997-1000

I4

Output pixel bit length

0016

bits

83

1001-1016

F16.7

Processor gain #1

0.0

 

84

1017-1032

F16.7

Processor gain #2

0.0

 

85

1033-1048

F16.7

Processor gain #3

0.0

 

86

1049-1052

I4

Peak location of Cross Correlation Function (CCF) between first extracted chirp and nominal chirp[for Bangkok processor, CCF between best extracted chirp

and nominal chirp]

0030

samples

87

1053-1068

F16.7

3-dB width of Cross Correlation Function (CCF) between last extracted chirp and nominal chirp

1.141

samples

88

1069-1084

F16.7

First side lobe level of chirp CCF between last extracted chirp and nominal chirp

-9.612

dB

89

1085-1100

F16.7

ISLR of chirp CCF between last extracted chirp and nominal chirp

-6.881

DB

90

1101-1104

I4

Peak location of Cross Correlation Function (CCF) between last extracted chirp and nominal chirp

0030

Samples

91

1105-1108

I4

Roll tilt mode flag (0 = not in roll tilt mode)

0000

 

92

1109-1112

I4

Raw data correction flag (0 = correction with defaults parameters)

0001

 

93

1113-1116

I4

Look detection flag (1 = power detected and summed) (Not provided)

-999

 

94

1117-1120

I4

Doppler ambiguity estimation flag (0 = no estimation done) (Not provided)

-999

 

95

1121-1124

I4

Azimuth baseband conversion flag (0 = no conversion done) (Not provided)

-999

 

96

1125-1128

I4

Samples per line used for the raw data analysis

1000

samples

97

1129-1132

I4

Range lines skip factor for raw data analysis

0010

lines

98

1133-1156

A24

Time of input state vector (UTC) used to processed the image

<dd-MMM-yyyy hh:mm:ss.ttt>

02-DEC-1997 04:51:00.000

 

99

1157-1178

D22.15

Input state vector - Position vector X

4.33291511E+06

m

100

1179-1200

D22.15

Input state vector - Position vector Y

6.832440E+05

m

101

1201-1222

D22.15

Input state vector - Position vector Z

5.68776213E+06

m

102

1223-1244

D22.15

Input state vector - Velocity vector X'

-5.72938895E+03

m/s

103

1245-1266

D22.15

Input state vector - Velocity vector Y'

-2.23133119E+03

m/s

104

1267-1288

D22.15

Input state vector - Velocity vector Z'

4.38098297E+03

m/s

105

1289-1292

I4

Input state vector type flag

(0 = ascending node state vectors, i.e predicted orbit,

1 = preliminary or precise

0001

 

106

1293-1308

F16.7

Window coefficient for range-matched filter

0.0

 

107

1309-1324

F16.7

Window coefficient for azimuth-matched filter

0.0

 

108

1325-1328

I4

Update period of range-matched filter

0000

chirps

109

1329-1456

8 F16.7

Look scalar gains (up to 8 looks)

0,0,0,0,0,0,0,0

 

110

1457-1460

I4

Sampling window start time bias

6265

nanosec

111

1461-1482

E22.15

Doppler centroid cubic coefficient

0.0

 

112

1483-1486

I4

PRF code of first range line (telemetry value)

2820

 

113

1487-1490

I4

PRF code of last range line (telemetry value)

2820

 

114

1491-1494

I4

Sampl. wind. start time code of first range line (telemetry value)

0900

 

115

1495-1498

I4

Sampl. wind. start time code of last range line (telemetry value)

0900

 

116

1499-1502

I4

Calibration system gain of last processed line (telemetry value)

0007

 

117

1503-1506

I4

Receiver gain of last processed line (telemetry value)

0019

 

118

1507-1510

I4

First processed range sample

0001

 

119

1511-1514

I4

Azimuth FFT/IFFT ratio ( Not relevant for the RAW product)

-999

 

120

1515-1518

I4

Number of azimuth blocks processed ( 0000 for the RAW product)

0000

 

121

1519-1526

I8

Number of input raw data lines (variable)

00028000

lines

122

1527-1530

I4

Initial Doppler ambiguity number

0000

 

123

1531-1578

3F16.7

Chirp quality thresholds

- Pulse width of the chirp CCF

- First sidelobe of the chirp CCF

- ISLR of the chirp CCF

1.5

-10.0

-6.0

 

pixels

dB

dB

 

1579-1642

4F16.7

Input data statistic thresholds

- Mean of input I data in fraction of maximum absolute of input data

- Mean of input Q data in fraction of maximum absolute of input data

- Standard deviation of input I data in fraction of maximum absolute of input

data

- Standard deviation of input Q data in fraction of maximum absolute of input

data

 

0.1

0.1

0.2

0.2

 

 
 

1643-1674

2F16.7

Doppler ambiguity confidence thresholds

0.0, 0.0

 
 

1675-1706

2F16.7

Output data statistic thresholds

- Mean of output data

- Standard deviation of output data

0.0

0.0

 

 

124

1707-1722

I16

Satellite binary time of first range line (telemetry value) (Not provided by the VMP)

-9999999.9999999

 

125

1723-1726

I4

Number of valid pixels per range line (the remaining pixels are zero padded)

5616

pixels

126

1727-1730

I4

Number of range samples discarded during processing interpolations

0000

samples

127

1731-1746

F16.7

I/ gain imbalance - Lower bound

0.998

 

128

1747-1762

F16.7

I/ gain imbalance - Upper bound

1.001

 

129

1763-1778

F16.7

I/Q quadrature departure - Lower bound

-1.660

degrees

130

1779-1794

F16.7

I/Q quadrature departure - Upper bound

2.364

degrees

131

1795-1810

F16.7

3-dB look bandwidth ( Not relevant for the RAW product)

-9999999.9999999

Hz

132

1811-1826

F16.7

3-dB processed Doppler bandwidth ( Not relevant for the RAW product)

-9999999.9999999

Hz

133

1827-1830

I4

Range sprading loss compensation flag (0 = no compensation)

0000

 

134

1831-1832

I1

Datation flag (1 = azimuth timing improved based on timing information of range line specified in field 136)

1

 

135

1833-1838

I7

Maximum error of range line timing

334613

nanosec

136

1839-1844

I7

Format number of range line used to synchronize the azimuth timing

0177204

 

137

1845-1846

I1

Automatic ook scalar gain flag (1= automatically calculated)

0

 

138

1847-1850

I4

Maximum value of look scalar gain before the look scalar gains are normalised (Not provided)

-999

 

139

1851-1854

I4

Replica normalisation method flag

(0 = normalised by replica power, i.e. Z' = Z . c/Ar where Ar is the replica power and c is specified in field 54,

1 = normalised by the square root of replica power, i.e. Z' = Z / Ar )

0000

 

140

1855-1934

4 E20.10

4 coefficients of the ground range to slant range conversion polynomial (Not provided)

1.4693679385e-39

 

141

1935-2034

5 E20.10

5 coefficients of the antenna elevation pattern polynomial (Not provided)

-9999...99E-99

 

142

2035-2050

E16.7

Range time of origin of antenna pattern polynomial (Not provided)

-9999999.9999999

sec

143

2051-12288

A10238

Spare

   

 

Table 9: RAW FACILITY RELATED DATA RECORD PCS TYPE

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1 - 4

B4

Record sequence number

5

 

2

5

B1

1-st record sub-type code

10

 

3

6

B1

Record-type code

200

 

4

7

B1

2 nd record sub-type code

31

 

5

8

B1

3 rd record sub-type code

50

 

6

9-12

B4

Length of this record

12288

 

7

13-76

A64

Name of this facility related data record

FACILITY RELATED DATA RECORD [ESA PCS QUALITY TYPE]

 

8

77-12288

B

ESA reserved

   

 

4. DATA SET FILE FORMAT DEFINITION

Table 10: SAR DATA FILE , FILE DESCRIPTOR RECORD (FIXED SEGMENT)

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1-4

B4

Record sequence number

1

 

2

5

B1

1st record sub-type code

63

 

3

6

B1

Record sub-type code

192

 

4

7

B1

2nd record sub-type code

18

 

5

8

B1

3rd record sub-type code

18

 

6

9-12

B4

Length of this record

11644

 

7

13-14

A2

ASCII/EBCDIC flag

A

 

8

15-16

A2

Blanks

   

9

17-28

A12

Format control document ID for this data file format

CEOS-SAR-CCT

 

10

29-30

A2

Format control document revision level

B

 

11

31-32

A2

File design descriptor revision letter

B

 

12

33-44

A12

Generating software release and revision level

ERS2-RAW-6.2

 

13

45-48

I4

File number

2

 

14

49-64

A16

File name

ERS2.SAR.RAWIMGY

 

15

65-68

A4

Record sequence and location type flag

FSEQ

 

16

69-76

I8

Sequence number location

1

 

17

77-80

I4

Sequence number field length

4

 

18

81-84

A4

Record code and location type flag

FTYP

 

19

85-92

I8

Record code location

5

 

20

93-96

I4

Record code field length

4

 

21

97-100

A4

Record length and location type flag

FLGT

 

22

101-108

I8

Record length location

9

 

23

109-112

I4

Record length field length

4

 

24-27

113-116

A1

Reserved

   

28

117-180

A64

Reserved segment

   
SAR DATA IMAGERY OPTIONS FILE, FILE DESCRIPTOR RECORD (VARIABLE SEGMENT)

29

181-186

I6

Number of SAR DATA records (variable)

028000

 

30

187-192

I6

SAR DATA record length

011644

bytes

31

193-216

A24

Reserved

   
SAMPLE GROUP DATA

32

217-220

I4

Number of bits per sample

16

 

33

221-224

I4

Number of samples per data group (or pixels)

1

 

34

225-228

I4

Number of bytes per data group(or pixels)

2

 

35

229-232

A4

Justification and order of samples within data group

   
SAR RELATED DATA IN THE RECORD

36

233-236

I4

Number of SAR channels in this file

1

 

37

237-244

I8

Number of lines per data set (variable)

00028000

 

38

245-248

I4

Number of left border pixels per line

0

 

39

249-256

I8

Total number of data groups per line per SAR channel

00005616

 

40

257-260

I4

Number of right border pixels per line

0000

 

41

261-264

I4

Number of topborder lines

0

 

42

265-268

I4

Number of bottom border lines

0

 

43

269-272

A4

Interleaving indicator

BSQ

 
RECORD DATA IN THE FILE

44

273-274

I2

Number of physical records per line

1

 

45

275-276

I2

Number of physical records per multi-channel line

1

 

46

277-280

I4

Number of bytes of prefix data per record

400

 

47

281-288

I8

Number of bytes of SAR data(or pixel data) per record (nominal)

00011232

 

48

289-292

I4

Number of bytes of suffix data per record

0

 

49-55

293-340

A48

Reserved

   

56

341-368

A28

Blanks

   

57-60

369-400

A32

Reserved

   

61

401-428

A28

SAR Data format type identifier

COMPLEX UNSIGNED INTEGER

 

62

429-432

A4

SAR Data format type code

CI*2

 

63

433-436

I4

Number of left fill bits within pixel

0

 

64

437-440

I4

Number of right fill bits within pixel

0

 

65

441-448

I8

Maximum data range of pixel

255

 

66

449-11644

A10196

Spare

   

 

Table 11: IMAGERY OPTIONS FILE - SIGNAL DATA RECORD DEFINITION

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1-4

B4

Record sequence number

2

 

2

5

B1

1-st record sub-type code

50

 

3

6

B1

Record type code

10

 

4

7

B1

2-nd record sub-type code

31

 

5

8

B1

3-rd record sub-type code

20

 

6

9-12

B4

Length of this record

11644

 
PREFIX DATA - GENERAL INFORMATION

7

13-16

B4

SAR image data line number

1

 

8

17-20

B4

SAR image data record index (indicates the record sequence number of the image line)

1

 

9

21-24

B4

Actual count of left-fill pixels

0

 

10

25-28

B4

Actual count of data pixels (samples)

5616

 

11

29-32

B4

Actual count of right-fill pixels

0

 
PREFIX DATA-SENSOR PARAMETERS

12-27

33-84

B52

Reserved

   

28

85-88

B4

Spare

   

29

89-92

B4

Spare

   

30-37

93-124

B32

Reserved

   

38

125-128

B4

Spare

   
PREFIX DATA PLATFORM REFERENCE INFORMATION

39-50

129-192

B64

Spare

   
PREFIX DATA - SENSOR/FACILITY SPECIFIC, AUXILIARY DATA

51 51

193-412

B220

Sensor/Facility specific auxiliary informaiton such as down linked auxiliary data (i.e. pulse replicas, etc.) and data quality information

   
     

Breakdown of field 51

   
 

193-202

B10

IDHT General Header

   
     

Breakdown of IDHT General Header(field 193-202)

   
 

193

B1

Packet counter

23

 
 

194

B1

Subcommutation counter

10

 
 

195-202

B8

IDHT General Header source packet

   
           
 

203-203

A1

Fixed code = AA in Hexadecimal notation

AA

 
 

204-204

B1

OGRC/OBRC flag (1 or 0) Orbit ID code(1=OBRC,0=OGRC,value 0 to 15 corresponds to orbit number 1 to 16, bit 4=LSB of code)

40

 
 

205-208

B4

ICU on board time

1442850363

 
 

209-210

B2

Activity task

48064

 
 

211-214

B4

Image format counter

101389

 
 

215-216

B2

Sampling window start time

1032

 
 

217-218

B2

Pulse repetition interval

2820

 
 

219-219

B1

Calibration attenuation setting

44

 
 

220-220

B1

Receiver gain attenuation setting

30

 
 

221-340

120B1

Spare

   
 

341-412

36B2

36 replica pulses as (4bit spare 6bit Q 6bit I from MSB down to LSB)

   
SAR RAW SIGNAL DATA

52

413-414

B2

First sample I and Q values

   

53

415-416

B2

Second sample I and Q values

   

..

.......

B2

...... sample I and Q values

   

5667

11643-11644

B2

Last sample I and Q values

   

 

5. NULL VOLUME FORMAT DEFINITION

Table 12: NULL VOLUME DESCRIPTOR RECORD

FIELD

BYTES

FORMAT

DESCRIPTION

EXAMPLE with

RAW product

UNITS

 

1

1-4

B4

Record sequence number

1

 

2

5

B1

1st record sub-type code

192

 

3

6

B1

Record sub-type code

192

 

4

7

B1

2nd record sub-type code

63

 

5

8

B1

3rd record sub-type code

18

 

6

9-12

B4

Length of this record

360

 

7

13-14

A2

ASCII/EBCDIC flag

A

 

8

15-16

A2

Blanks

   

9

17-28

A12

Format control document

CCB-CCT-0002

 

10

29-30

A2

Superstructure document

E

 

11

31-32

A2

Superstructure record format revision

A

 

12

33-44

A12

Logical volume generating facility software release and revision level

ERS2-RAW-6.2

 

13

45-60

A16

ID of physical volume containing this volume descriptor

1

 

14

61-76

A16

Logical volume identifier

0003792600087854

 

15

77-92

A16

Volume set identifier

199712 2 451 828

 

16

93-94

I2

Total number of physical volumes in the logical volume

1

 

17

95-96

I2

Physical volume sequence number of the first tape within the logical volume

1

 

18

97-98

I2

Physical volume sequence number of the last tape in the logical volume

1

 

19

99-100

I2

Physical volume sequence number of the current tape within the logical volume

1

 

20

101

I4

First referenced file number in this physical volume within the logical volume

1

 

21

105-108

I4

Logical volume within a volume set

1

 

22

109-112

I4

Logical volume number within physical volume

1

 

23

113-120

A8

Logical volume creation date (YYYYMMDD)

19980508

 

24

121-128

A8

Logical volume creation time (hhmmssdd, dd-deci-seconds) (dd not provided)

100155

 

25

129-140

A12

Logical volume generation country(GERMANY, ENGLAND, ITALY)

GERMANY

 

26

141-148

A8

Logical volume agency

ESA

 

27

149-160

A12

Logical volume generating facility(D-PAF,UK-PAF, IPAF(ASI), ES, MS, KS, FS)

D-PAF

 

28

161-164

I4

Number of file pointer records in volume directory

0

 

29

165-168

I4

Number of records in volume directory

1

 

30

169-260

A92

Volume descriptor spare segment(always blank filled)

   

31

261-360

A100

Local use segment

   

 

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry