Supported ENVISAT Products

Contains ASAR processor configuration data

  Fields of ENVISAT ASA_CON_AX_GADS Records

Index Identifier Field Type Field Length Description Units
0 "dsr_time" MJD 1 Time of creation MJD
1 "dsr_length" ULong 1 Length of this DSR in bytes bytes
2 "thresh_chirp_broadening" Float 1 Threshold for setting the chirp quality flag. Maximum percentage broadening permitted in cross-correlation pulse width compared to theoretical width. %
3 "thresh_chirp_sidelobe" Float 1 Threshold for setting the chirp quality flag - First sidelobe of the chirp cross correlation function dB
4 "thresh_chirp_islr" Float 1 Threshold for setting the chirp quality flag - ISLR of the chirp cross correlation function dB
5 "thresh_input_mean" Float 1 Threshold for setting the mean of input data quality flag - For an expected mean value of x, this is the value T, such that the measured mean must fall between the x-T and x+T. Used for both I and Q channels. -
6 "thresh_input_std_dev" Float 1 Threshold for setting the standard deviation of input data quality flag - For an expected std. dev. value of y, this is the value D, such that the measured std. dev. must fall between the y-D and y+D. Used for both I and Q channels. -
7 "thresh_dop_cen" Float 1 Threshold for setting the Doppler Centroid quality flag - Threshold for Doppler Centroid confidence -
8 "thresh_dop_amb" Float 1 Threshold for setting the Doppler Centroid ambiguity quality flag - Threshold for setting the Doppler Centroid ambiguity confidence flag -
9 "thresh_output_mean" Float 1 Threshold for setting the mean of output data quality flag - For an expected mean value of x, this is the value T, such that the measured mean must fall between the x-T and x+T. -
10 "thresh_output_std_dev" Float 1 Threshold for setting the standard deviation of output data quality flag - For an expected std. dev. value of y, this is the value D, such that the measured std. dev. must fall between the y-D and y+D. -
11 "thresh_missing_lines" Float 1 Threshold for setting the missing lines quality flag - maximum percentage of missing lines to total lines. -
12 "thresh_gaps" Float 1 Threshold for setting the missing gaps quality flag - maximum number of gaps allowed. -
13 "spare_1" Spare 1 Spare -
14 "lines_per_gap" ULong 1 Number of missing lines which constitute a gap lines
15 "exp_im_mean" Float 1 Expected mean of I and Q samples for IM (and WV) SLC images -
16 "exp_im_std_dev" Float 1 Expected standard deviation of I and Q samples for IM (and WV) SLC images -
17 "exp_ap_mean" Float 1 Expected mean of I and Q samples for AP SLC images -
18 "exp_ap_std_dev" Float 1 Expected standard deviation of I and Q samples for AP SLC images -
19 "exp_imp_mean" Float 1 Expected mean of IM PRI samples -
20 "exp_imp_std_dev" Float 1 Expected standard deviation of IM PRI samples -
21 "exp_app_mean" Float 1 Expected mean of AP PRI samples -
22 "exp_app_std_dev" Float 1 Expected standard deviation of AP PRI samples -
23 "exp_imm_mean" Float 1 Expected mean of IMM samples -
24 "exp_imm_std_dev" Float 1 Expected standard deviation of IMM samples -
25 "exp_apm_mean" Float 1 Expected mean of APM samples -
26 "exp_apm_std_dev" Float 1 Expected standard deviation of APM samples -
27 "exp_wsm_mean" Float 1 Expected mean of WSM samples -
28 "exp_wsm_std_dev" Float 1 Expected standard deviation of WSM samples -
29 "exp_gm1_mean" Float 1 Expected mean of GM1 samples -
30 "exp_gm1_std_dev" Float 1 Expected standard deviation of GM1 samples -
31 "input_mean" Float 1 Expected input mean -
32 "expected_input_std_dev" Float 1 Expected input standard deviation -
33 "look_conf_thresh" Float 2 Look image statistics confidence parameter thresholds (minimum and maximum) -
34 "inter_look_conf_thresh" Float 1 Inter-look confidence statistics confidence parameter threshold -
35 "az_cutoff_thresh" Float 1 Azimuth cut-off convergence measure threshold -
36 "az_cutoff_iterations_thresh" Float 1 Azimuth cut-off Iteration count overflow threshold -
37 "phs_peak_thresh" Float 1 Phase information confidence measure threshold for the spectral peak -
38 "phs_cross_thresh" Float 1 Phase information confidence measure threshold for the cross covariance peak offset m
39 "spare_2" Spare 1 Spare -
40 "spare_3" Spare 1 Spare -