3.6.1. L1A Input Files¶

3.6.1.1. File Description¶

The Dedop processor reads Level 1A Sentinel-3 format data files. These files are in the netCDF4 (.nc) format, and must have the correct dimensions and variables as described in this page. If the format of the input file being processed does not match the format described here, Dedop may be unable to read the file.

Input files can be added to a workspace via the command dedop input add, or passed directly to the processor at run-time by using the -i parameter of the dedop run command.

3.6.1.2. Dimensions¶

echo_sample_ind
- description: the number of samples per echo
sar_ku_pulse_burst_ind
- description: the number of Ku-band pulses in a SAR burst
sar_c_pulse_burst_ind
- description: the number of C-band pulses in a SAR burst
ltm_max_ind
- description: Maximum number of LTM Cal1 or Cal2 tables
time_l1a_echo_sar_ku
- description: the along-track time of SAR bursts
time_l1a_echo_plrm
- description: the along-track time of PLRM bursts

3.6.1.3. Variables¶

echo_sample_ind
- description: the echo sample index
sar_ku_pulse_burst_ind
- description: the SAR Ku-band burst index
sar_c_pulse_burst_ind
- description: the SAR C-band burst index
ltm_max_ind
- description: Maximum number of LTM Cal1 or Cal2 tables
time_l1a_echo_sar_ku
- description: the time of the SAR Ku-band burst
UTC_day_l1a_echo_sar_ku
- description: the UTC day number of the burst
UTC_sec_l1a_echo_sar_ku
- description: the number of seconds of the current UTC day of the burst
UTC_time_20hz_l1a_echo_sar_ku
- description: UTC of the 20 Hz measurement
isp_coarse_time_l1a_echo_sar_ku
- description: ISP coarse time
isp_fine_time_l1a_echo_sar_ku
- description: ISP fine time
flag_time_status_l1a_echo_sar_ku
- description: time status flag
sral_fine_time_l1a_echo_sar_ku
- description: ISP SRAL fine datation
lat_l1a_echo_sar_ku
- description: the latitude (degrees north) for the current burst
lon_l1a_echo_sar_ku
- description: the longitude (degrees east) for the corrent burst
surf_type_l1a_echo_sar_ku
- description: the surface type flag
burst_count_prod_l1a_echo_sar_ku
- description: bursts counter within the product
seq_count_l1a_echo_sar_ku
- description: the source sequence counter index
burst_count_cycle_l1a_echo_sar_ku
- description: bursts counter within the tracking cycle
nav_bul_status_l1a_echo_sar_ku
- description: navigation bulletin status
nav_bul_source_l1a_echo_sar_ku
- description: navigation bulletin source identifier
oper_instr_l1a_echo_sar_ku
- description: the instrument flag
SAR_mode_l1a_echo_sar_ku
- description: SAR mode identifier
cl_gain_l1a_echo_sar_ku
- description: tracking configuration - closed loop gain
acq_stat_l1a_echo_sar_ku
- description: tracking configuration - acquisition status
dem_eeprom_l1a_echo_sar_ku
- description: tracking configuration - DEM EEPROM read access
weighting_l1a_echo_sar_ku
- description: altimeter configuration - weighting function
loss_track_l1a_echo_sar_ku
- description: loss of track criterion
h0_nav_dem_l1a_echo_sar_ku
- description: altitude command H0 computed with nav DEM
h0_applied_l1a_echo_sar_ku
- description: applied altitude command H0
cor2_nav_dem_l1a_echo_sar_ku
- description: altitude command COR2 computed with nav DEM
cor2_applied_l1a_echo_sar_ku
- description: applied altitude command COR2
dh0_l1a_echo_sar_ku
- description: distance error computed on the echo of the cycle (N-2) in open loop mode
agccode_ku_l1a_echo_sar_ku
- description: AGCCODE for ku band
agccode_c_l1a_echo_sar_ku
- description: AGCCODE for c band
alt_l1a_echo_sar_ku
- description: the altitude of the current burst
orb_alt_rate_l1a_echo_sar_ku
- description: the altitude rate of the current burst
x_pos_l1a_echo_sar_ku
- description: the ECEF x-coordinate of the current burst
y_pos_l1a_echo_sar_ku
- description: the ECEF y-coordinate of the current burst
z_pos_l1a_echo_sar_ku
- description: the ECEF z-coordinate of the current burst
x_vel_l1a_echo_sar_ku
- description: the ECEF x-velocity of the current burst
y_vel_l1a_echo_sar_ku
- description: the ECEF y-velocity of the current burst
z_vel_l1a_echo_sar_ku
- description: the ECEF z-velocity of the current burst
roll_sat_pointing_l1a_echo_sar_ku
- description: the roll (degrees) of the satellite at the current burst
pitch_sat_pointing_l1a_echo_sar_ku
- description: the pitch (degrees) of the satellite at the current burst
yaw_sat_pointing_l1a_echo_sar_ku
- description: the yaw (degrees) of the satellite at the current burst
roll_sral_mispointing_l1a_echo_sar_ku
- description: SRAL mispointing angle - roll
pitch_sral_mispointing_l1a_echo_sar_ku
- description: SRAL mispointing angle - pitch
yaw_sral_mispointing_l1a_echo_sar_ku
- description: SRAL mispointing angle - yaw
range_ku_l1a_echo_sar_ku
- description: the receiving window range
int_path_cor_ku_l1a_echo_sar_ku
- description: the internal path correction
uso_cor_l1a_echo_sar_ku
- description: the USO correction
cog_cor_l1a_echo_sar_ku
- description: the Centre-of-Gravity correction
agc_ku_l1a_echo_sar_ku
- description: the AGC correction
scale_factor_ku_l1a_echo_sar_ku
- description: the sigma-0 scaling factor
sig0_cal_ku_l1a_echo_sar_ku
- description: internal calibration correction on Sigma0 for ku band
i_meas_ku_l1a_echo_sar_ku
- description: the i-component of the measured waveform
q_meas_ku_l1a_echo_sar_ku
- description: the q-component of the measured waveform
gprw_meas_ku_l1a_echo_sar_ku
- description: ku band samples of the normalized GPRW (cal2)
cal2_ku_ind_l1a_echo_sar_ku
- description: the CAL2 index
burst_power_cor_ku_l1a_echo_sar_ku
- description: the power of the burst
burst_phase_cor_ku_l1a_echo_sar_ku
- description: the phase of the burst
cal1_ku_ind_l1a_echo_sar_ku
- description: the CAL1 index