The Level-1 ECHO_PLRM product contains all L1B tracking measurements in pseudo-LRM (PLRM) mode, at 20 Hz rate and for both Ku and C band.
The main parameters of Level-1 ECHO_PLRM product are:
Table 1: Level-1 ECHO_PLRM product main parameters
Parameter name
|
Description
|
Units
|
time_l1b_echo_plrm
|
UTC time seconds elapsed since January 1st 2000 00:00:00
|
seconds
|
lat_l1b_echo_plrm
|
Latitude
|
1.00e-06 degrees North
|
lon_l1b_echo_plrm
|
Longitude
|
1.00e-06 degrees East
|
surf_type_l1b_echo_plrm
|
Altimeter surface type
|
0b:open_ocean_or_semi-enclosed_seas
1b:enclosed_seas_or_lakes
2b:continental_ice
3b:land
|
range_ku_l1b_echo_plrm
range_c_l1b_echo_plrm
|
Tracker range (Ku or C band) corrected for USO frequency drift, internal path delay and Doppler corrections.
|
1.00e-04 meters (unit)
700000 meters (offset to be added)
|
sig0_cal_ku_l1b_echo_plrm
sig0_cal_c_l1b_echo_plrm
|
Scaling factor (Ku or C band) for sigma0 evaluation corrected for AGC instrumental errors and internal calibration
|
1.00e-02 dB
|
i2q2_meas_ku_l1b_echo_plrm i2q2_meas_c_l1b_echo_plrm
|
I2+Q2 echo waveforms corrected for the GPRW instrumental effect
|
count (unit)
1.00e-03 (scale factor)
|
For further information about Level-1 ECHO_PLRM product parameters:
Level-1 ECHO_PLRM Time parameters
Level-1 ECHO_PLRM Location parameters
Level-1 ECHO_PLRM Instrument status
Level-1 ECHO_PLRM Surface Type
Level-1 ECHO_PLRM Tracker range
Level-1 ECHO_PLRM Sigma0 Scaling Factor
Level-1 ECHO_PLRM Waveforms