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
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)
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