3.6.2. L1B Output Files¶
3.6.2.1. File Description¶
The L1B file is the primary output created by the dedop processor. Each record in the L1B file represents information about a surface position beneath the satellite track.
3.6.2.2. Dimensions¶
- time_l1b_echo_sar_ku
- description: Number of L1B ECHO_SAR_Ku measurements
- echo_sample_ind
- description: Number of samples in a waveform
- max_multi_stack_ind
- description: Maximum number of multilook beams per stack
3.6.2.3. Variables¶
- time_l1b_echo_sar_ku
- description: UTC Seconds since 2000-01-01 00:00:00.0
- UTC_day_l1b_echo_sar_ku
- description: UTC Days since 2000-01-01 00:00:00.0
- UTC_sec_l1b_echo_sar_ku
- description: Seconds since the start of the current UTC day
- GPS_time_l1b_echo_sar_ku
- description: GPS time
- isp_coarse_time_l1b_echo_sar_ku
- description: ISP coarse time
- isp_fine_time_l1b_echo_sar_ku
- description: ISP fine time
- sral_fine_time_l1b_echo_sar_ku
- description: ISP SRAL fine datation
- lat_l1b_echo_sar_ku
- description: latitude (degrees north)
- lon_l1b_echo_sar_ku
- description: longitude (degrees east)
- alt_l1b_echo_sar_ku
- description: altitude of satellite
- orb_alt_rate_l1b_echo_sar_ku
- description: orbital altitude rate
- flag_time_status_l1b_echo_sar_ku
- description: time status flag
- time_time_corr_val_l1b_echo_sar_ku
- description: time correlation validity flag
- flag_man_pres_l1b_echo_sar_ku
- description: manoeuvre presence flag (no manoeuvre/ongoing manoeuvre)
- flag_man_thrust_l1b_echo_sar_ku
- description: manoeuvre thrust flag (no thrust/ongoing thrust)
- flag_man_plane_l1b_echo_sar_ku
- description: manoeuvre plane flag (in plane/out of plane)
- flag_gnss_status_l1b_echo_sar_ku
- description: validity flag for the navigation message from the gnss receiver
- x_pos_l1b_echo_sar_ku
- description: satellite altitude - x component
- y_pos_l1b_echo_sar_ku
- description: satellite altitude - y component
- z_pos_l1b_echo_sar_ku
- description: satellite altitude - z component
- x_vel_l1b_echo_sar_ku
- description: satellite velocity - x component
- y_vel_l1b_echo_sar_ku
- description: satellite velocity - y component
- z_vel_l1b_echo_sar_ku
- description: satellite velocity - z component
- nav_bul_status_l1b_echo_sar_ku
- description: navigation bulletin status (ok/ko)
- nav_bul_source_l1b_echo_sar_ku
- description: navigation bulletin source identifier (gps/doris)
- nav_bul_coarse_time_l1b_echo_sar_ku
- description: navigation bulletin coarse time
- nav_bul_fine_time_l1b_echo_sar_ku
- description: navigation bulletin fine time
- seq_count_l1b_echo_sar_ku
- description: sequence count
- isp_time_status_echo_sar_ku
- description: ISP time status
- oper_instr_l1b_echo_sar_ku
- description: operating instrument
- SAR_mode_l1b_echo_sar_ku
- description: LRM mode identifier
- cl_gain_l1b_echo_sar_ku
- description: tracking configuration - closed loop gain
- acq_stat_l1b_echo_sar_ku
- description: tracking configuration - acquisition status
- dem_eeprom_l1b_echo_sar_ku
- description: tracking configuration - DEM EEPROM read access
- weighting_l1b_echo_sar_ku
- description: altimeter configuration - weighting function
- loss_track_l1b_echo_sar_ku
- description: loss of track criterion
- h0_nav_dem_l1b_echo_sar_ku
- description: altitude command H0 computed with nav DEM
- h0_applied_l1b_echo_sar_ku
- description: applied altitude command H0
- cor2_nav_dem_l1b_echo_sar_ku
- description: altitude command COR2 computed with nav DEM
- cor2_applied_l1b_echo_sar_ku
- description: applied altitude command COR2
- dh0_l1b_echo_sar_ku
- description: distance error computed on the echo of the cycle (N-2) in open loop mode
- agccode_ku_l1b_echo_sar_ku
- description: AGCCODE for ku band
- surf_type_l1b_echo_sar_ku
- description: altimeter surface type
- range_ku_l1b_echo_sar_ku
- description: corrected range for ku band
- uso_cor_l1b_echo_sar_ku
- description: USO frequency drift correction
- int_path_cor_ku_l1b_echo_sar_ku
- description: internal path correction for ku band
- range_rate_l1b_echo_sar_ku
- description: range rate
- agc_ku_l1b_echo_sar_ku
- description: corrected AGC for ku band
- scale_factor_ku_l1b_echo_sar_ku
- description: scaling factor for sigma0 evaluation for ku band
- agc_cor_ku_l1b_echo_sar_ku
- description: correction for instrumental errors on AGC for ku band
- sig0_cal_ku_l1b_echo_sar_ku
- description: internal calibration correction on Sigma0 for ku band
- nb_stack_l1b_echo_sar_ku
- description: number of waveforms summed in stack
- max_stack_l1b_echo_sar_ku
- description: maximum power of stack
- stdev_stack_l1b_echo_sar_ku
- description: standard deviation of stack
- skew_stack_l1b_echo_sar_ku
- description: skewness of stack
- kurt_stack_l1b_echo_sar_ku
- description: kurtosis of stack
- beam_ang_l1b_echo_sar_ku
- description: look angles in stack
- beam_form_l1b_echo_sar_ku
- description: flag on beam formation quality in stack
- i2q2_meas_ku_l1b_echo_sar_ku
- description: I2+Q2 measurement for ku band