Sentinel-3 Altimetry Technical Guide - Level-1 ECHO_LRM Product

Level-1 ECHO_LRM Product

The Level-1 ECHO_LRM product contains all L1B tracking measurements in LRM mode, at 20 Hz rate and for both Ku and C band.

The main parameters of Level-1 ECHO_LRM product are:

Table 1: Level-1 ECHO_LRM product main parameters
Parameter name Description Units
time_l1b_echo_lrm UTC time seconds elapsed since January 1st 2000 00:00:00 seconds
lat_l1b_echo_lrm Latitude 1.00e-06 degrees North
lon_l1b_echo_lrm Longitude 1.00e-06 degrees East
surf_type_l1b_echo_lrm 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_lrm i2q2_meas_c_l1b_echo_lrm I2+Q2 echo waveforms corrected for the GPRW instrumental effect count (unit)
1.00e-03 (scale factor)


For further information about Level-1 ECHO_LRM product parameters:

Level-1 ECHO_LRM Time parameters

Level-1 ECHO_LRM Location parameters

Level-1 ECHO_LRM Instrument status

Level-1 ECHO_LRM Surface Type

Level-1 ECHO_LRM Tracker range

Level-1 ECHO_LRM Sigma0 Scaling Factor

Level-1 ECHO_LRM Waveforms

Key Resources