Supported ENVISAT Products |

## Slant Range to Ground Range conversion parameters

Fields of ENVISAT ASAR_SRGR_ADSR Records

Index | Identifier | Field Type | Field Length | Description | Units
0 | `"zero_doppler_time"` | MJD | 1 | Zero Doppler Time in azimuth from which parameters apply | MJD
1 | `"attach_flag"` | UChar | 1 | Attachment Flag (always set to zero for this ADSR) | flag
2 | `"slant_range_time"` | Float | 1 | 2 way slant range time to first range sample | ns
3 | `"ground_range_origin"` | Float | 1 | Ground range origin of the polynomial (GR0) measured for the first pixel of the line. | m
4 | `"srgr_coeff"` | Float | 5 | The coefficients S0, S1, S2, S3, and S4 of the ground range to slant range conversion polynomial. Slant range = S0 + S1(GR-GR0) + S2 (GR-GR0)2 + S3(GR-GR0)3 + S4(GR-GR0)4 | m, m-1, m-2, m-3, m-4
5 | `"spare_1"` | Spare | 1 | Spare | -