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 | -