| id | field name | definition |
|---|
| 0 | zero_doppler_time |
| binary time | size: 12 |
|---|
Zero Doppler Time of first line of the first line of the imagette
unit: "s since 2000-01-01"
value: float(./days) * 86400 + float(./seconds) + float(./microseconds) / 1000000
| binary record | size: 12 |
|---|
ENVISAT binary datetime
| id | field name | definition |
|---|
| 0 | days |
| binary int32 | size: 4 |
|---|
days since January 1st, 2000 (may be negative)
unit: "days since 2000-01-01"
|
|
| 1 | seconds |
| binary uint32 | size: 4 |
|---|
seconds since start of day
unit: "s"
|
|
| 2 | microseconds |
| binary uint32 | size: 4 |
|---|
microseconds since start of second
unit: "1e-6 s"
|
|
|
|
|
| 1 | attach_flag |
| binary int8 | size: 1 |
|---|
|
Attachment Flag (set to 1 if unable to compute the cross spectra for a given SLC imagette (i.e. no Cross Spectra MDSR corresponding to this ADSR), set to 0 otherwise)
|
|
| 2 | center_lat |
| binary int32 (double) | size: 4 |
|---|
Geodetic latitude of center point (positive north) This is the center point of the wave cell. It is calculated after the cross spectra processing, and thus may differ from the center sample latitude of the SLC imagette if slant range to ground range conve
unit: "1e-6 degrees_north"
converted unit: "degrees_north" (multiply by 1/1000000)
|
|
| 3 | center_long |
| binary int32 (double) | size: 4 |
|---|
Geodetic longitude of center point (positive east)This is the center point of the wave cell. It is calculated after the cross spectra processing, and thus may differ from the center sample latitude of the SLC imagette if slant range to ground range conver
unit: "1e-6 degrees_east"
converted unit: "degrees_east" (multiply by 1/1000000)
|
|
| 4 | heading |
| binary float | size: 4 |
|---|
Subsatellite Track Heading (relative to north) of center point
unit: "degrees"
|
|