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DESCRIPTION

The RADARSAT-2 ESA archive collection consists of RADARSAT-2 products requested by ESA supported projects over their areas of interest around the world. The dataset regularly grows as ESA collects new products over the years. Following Beam modes are available: Standard, Wide Swath, Fine Resolution, Extended Low Incidence, Extended High Incidence, ScanSAR Narrow and ScanSAR Wide.

Standard Beam Mode allows imaging over a wide range of incidence angles with a set of image quality characteristics which provides a balance between fine resolution and wide coverage, and between spatial and radiometric resolutions. Standard Beam Mode operates with any one of eight beams, referred to as S1 to S8, in single and dual polarisation . The nominal incidence angle range covered by the full set of beams is 20 degrees (at the inner edge of S1) to 52 degrees (at the outer edge of S8). Each individual beam covers a nominal ground swath of 100 km within the total standard beam accessibility swath of more than 500 km.

Beam Mode Product Nominal Resolution (metres) Nominal Pixel Spacing

Range x Azimuth

(metres)
Resolution

Range x Azimuth

(metres)
Nominal Scene Size

Range x Azimuth

(kilometres)
Range of Angle of Incidence

(degrees)
Number of Looks

Range x Azimuth
Polarisations Options
Standard SLC 25 8.0 or 11.8 x 5.1 9.0 or 13.5 x 7.7 100 x 100 20 - 52 1 x 1 Single Pol HH or VV or HV or VH

- or -

Dual HH + HV or VV + VH
SGX 8.0 x 8.0 26.8 - 17.3 x 24.7 1 x 4
SGF 12.5 x 12.5
SSG, SPG

 

Wide Swath Beam Mode allows imaging of wider swaths than Standard Beam Mode, but at the expense of slightly coarser spatial resolution. The three Wide Swath beams, W1, W2 and W3, provide coverage of swaths of approximately 170 km, 150 km and 130 km in width respectively, and collectively span a total incidence angle range from 20 degrees to 45 degrees. Polarisation can be single and dual.

Beam Mode Product Nominal Resolution (metres) Nominal Pixel Spacing

Range x Azimuth

(metres)
Resolution

Range x Azimuth

(metres)
Nominal Scene Size

Range x Azimuth

(kilometres)
Range of Angle of Incidence

(degrees)
Number of Looks

Range x Azimuth
Polarisations Options
Wide SLC 30 11.8 x 5.1 13.5 x 7.7 150 x 150 20 - 45 1 x 1 Single: Pol HH or VV or HV or VH

- or -

Dual: HH + HV or VV + VH
SGX 10 x 10 40.0 - 19.2 x 24.7 1 x 4
SGF 12.5 x 12.5
SSG, SPG

 

Fine Resolution Beam Mode is intended for applications which require finer spatial resolution. Products from this beam mode have a nominal ground swath of 50 km. Nine Fine Resolution physical beams, F23 to F21, and F1 to F6 are available to cover the incidence angle range from 30 to 50 degrees. For each of these beams, the swath can optionally be centred with respect to the physical beam or it can be shifted slightly to the near or far range side. Thanks to these additional swath positioning choices, overlaps of more than 50% are provided between adjacent swaths. RADARSAT-2 can operate in single and dual polarisation for this beam mode.

Beam Mode Product Nominal resolution (metres) Nominal Pixel Spacing

Range x Azimuth

(metres)
Resolution

Range x Azimuth

(metres)
Nominal Scene Size

Range x Azimuth

(kilometres)
Range of Angle of Incidence

(degrees)
Number of Looks

Range x Azimuth
Polarisations Options
Fine SLC 8 4.7 x 5.1 5.2 x 7.7 50 x 50 30 - 50 1 x 1 Single: Pol HH or VV or HV or VH

- or -

Dual: HH + HV or VV + VH
SGX 3.13 x 3.13 10.4 - 6.8 x 7.7 1 x 1
SGF 6.25 x 6.25
SSG, SPG

 

In the Extended Low Incidence Beam Mode, a single Extended Low Incidence Beam, EL1, is provided for imaging in the incidence angle range from 10 to 23 degrees with a nominal ground swath coverage of 170 km. Some minor degradation of image quality can be expected due to operation of the antenna beyond its optimum scan angle range. Only single polarisation is available.

Beam Mode Product Nominal resolution (metres) Nominal Pixel Spacing

Range x Azimuth

(metres)
Resolution

Range x Azimuth

(metres)
Nominal Scene Size

Range x Azimuth

(kilometres)
Range of Angle of Incidence

(degrees)
Number of Looks

Range x Azimuth
Polarisations Options
Extended Low SLC 25 8.0 x 5.1 9.0 x 7.7 170 x 170 10 - 23 1 x 1 Single: HH
SGX 10.0 x 10.0 52.7 - 23.3 x 24.7 1 x 4
SGF 12.5 x 12.5
SSG, SPG

 

In the Extended High Incidence Beam Mode, six Extended High Incidence Beams, EH1 to EH6, are available for imaging in the 49 to 60 degree incidence angle range. Since these beams operate outside the optimum scan angle range of the SAR antenna, some degradation of image quality, becoming progressively more severe with increasing incidence angle, can be expected when compared with the Standard Beams. Swath widths are restricted to a nominal 80 km for the inner three beams, and 70 km for the outer beams. Only single polarisation available.

Beam Mode Product Nominal resolution (metres) Nominal Pixel Spacing

Range x Azimuth

(metres)
Resolution

Range x Azimuth

(metres)
Nominal Scene Size

Range x Azimuth

(kilometres)
Range of Angle of Incidence

(degrees)
Number of Looks

Range x Azimuth
Polarisations Options
Extended High SLC 25 11.8 x 5.1 13.5 x 7.7 75 x 75 49 - 60 1 x 1 Single Pol HH
SGX 8.0 x 8.0 18.2 - 15.9 x 24.7 1 x 4
SGF 12.5 x 12.5
SSG, SPG

 

ScanSAR Narrow Beam Mode provides coverage of a ground swath approximately double the width of the Wide Swath Beam Mode swaths. Two swath positions with different combinations of physical beams can be used: SCNA, which uses physical beams W1 and W2, and SCNB, which uses physical beams W2, S5, and S6. Both options provide coverage of swath widths of about 300 km. The SCNA combination provides coverage over the incidence angle range from 20 to 39 degrees. The SCNB combination provides coverage over the incidence angle range 31 to 47 degrees. RADARSAT-2 can operate in single and dual polarisation for this beam mode.

Beam Mode Product Nominal resolution (metres)) Nominal Pixel Spacing

Range x Azimuth

(metres)
Resolution

Range x Azimuth

(metres)
Nominal Scene Size

Range x Azimuth

(kilometres)
Range of Angle of Incidence

(degrees)
Number of Looks

Range x Azimuth
Polarisations Options
ScanSAR Narrow SCN, SCF, SCS 20 25 x 25 81 - 38 x 40 - 70 300 x 300 20 - 46 2 x 2 Single Co or Cross: HH or VV or HV or VH

- or -

Dual: HH + HV or VV + VH

 

ScanSAR Wide Beam Mode provides coverage of a ground swath approximately triple the width of the Wide Swath Beam Mode swaths. Two swath positions with different combinations of physical beams can be used: SCWA, which uses physical beams W1, W2, W3, and S7, and SCWB, which uses physical beams W1, W2, S5 and S6. The SCWA combination allows imaging of a swath of more than 500 km covering an incidence angle range of 20 to 49 degrees. The SCWB combination allows imaging of a swath of more than 450 km covering the incidence angle. Polarisation can be single and dual.

Beam Mode Product Nominal resolution (metres) Nominal Pixel Spacing

Range x Azimuth

(metres)
Resolution

Range x Azimuth

(metres)
Nominal Scene Size

Range x Azimuth

(kilometres)
Range of Angle of Incidence

(degrees)
Number of Looks

Range x Azimuth
Polarisations Options
ScanSAR Wide SCW, SCF, SCS 100 50 x 50 163 - 73 x 78 - 106 500 x 500 20 - 49 4 x 2 Single Co or Cross: HH or VV or HV or VH

- or -

Dual: HH + HV or VV + VH

 

These are the different products :

  • SLC (Single Look Complex): Amplitude and phase information is preserved. Data is in slant range. Georeferenced and aligned with the satellite track
  • SGF (Path Image): Data is converted to ground range and may be multi-look processed. Scene is oriented in direction of orbit path. Georeferenced and aligned with the satellite track.
  • SGX (Path Image Plus): Same as SGF except processed with refined pixel spacing as needed to fully encompass the image data bandwidths. Georeferenced and aligned with the satellite track
  • SSG(Map Image): Image is geocorrected to a map projection.
  • SPG (Precision Map Image): Image is geocorrected to a map projection. Ground control points (GCP) are used to improve positional accuracy.
  • SCN(ScanSAR Narrow)/SCF(ScanSAR Wide) : ScanSAR Narrow/Wide beam mode product with original processing options and metadata fields (for backwards compatibility only). Georeferenced and aligned with the satellite track
  • SCF (ScanSAR Fine): ScanSAR product equivalent to SGF with additional processing options and metadata fields. Georeferenced and aligned with the satellite track
  • SCS(ScanSAR Sampled) : Same as SCF except with finer sampling. Georeferenced and aligned with the satellite track

 

DETAILS

DATA SET SPECIFICATIONS

Spatial coverage: 
90 N, -90 S, -180 W, 180 E
Temporal coverage:
2008-07-27 - 2021-04-11
Date of launch:
2007-12-14
Operators:
CSA
Mission status:
onGoing
Orbit height:
798 km
Orbit type:
Sun-synchronous
Swath width:
50 km for Fine Resolution, 75 km for Extended High Incidence, 100 km for Standard, 50 km for Wide Swath, 170 km for Extended Low Incidence, 300 km for ScanSAR Narrow, 500 km for ScanSAR Wide
Resolution:
Medium Resolution - MR (20 - 500 m) Very High Resolution - VHR (0 - 5m)
Wavelengths:
C-Band (5.2 - 7.7 cm)

PROCESSING LEVEL

level 1 , level 2 , multiple

HOW TO ACCESS THIS DATA

Registration Mode: Fast Approval .

The collection is available to users located in ESA Member States and European Commission Member States upon approval of the data access request, authorized after successful identity or eligibility check (within 2 days).

The products are available for download via the ESA Third Party Missions (TPM) dedicated dissemination service and catalogue The data is collection based and allows data browse and download through the treeview as well as via geographical search using a clickable zoom map.

For further information about the EO Sign In Service you can visit TellUs

Should you need support please contact EOHelp

 

APPLICABLE TERMS & CONDITIONS

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