| id | field name | definition |
|---|
| 0 | sensing_time |
| binary time | size: 12 |
|---|
Sensing Time. Time of the actual acquisition of the source packet
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 | packet_length |
| binary uint16 | size: 2 |
|---|
|
Packet length = (length of source packet excluding 6 bytes) - 1
|
|
| 2 | num_vcdu |
| binary uint16 | size: 2 |
|---|
|
Number of VCDUs containing current SP
|
|
| 3 | num_vcdu_missing |
| binary uint16 | size: 2 |
|---|
|
Number of missing VCDUs containing current SP
|
|
| 4 | crc_flag |
| binary uint8 | size: 1 |
|---|
|
CRC Error Flag, identifying the detection of a CRC error in the packet (1 = CRC error, 0 = no CRC error)
|
|
| 5 | spare |
| binary bytes | size: 1 |
|---|
|
spare
|
hidden: true
|
| 6 | source_packet |
| binary record |
|---|
Instrument Source Packet
| id | field name | definition |
|---|
| 0 | packet_header |
|
| 1 | data |
| binary record |
|---|
| id | field name | definition |
|---|
| 0 | data_field_header |
|
| 1 | SID |
|
| 2 | GST00002 |
| binary uint32 | size: 1 |
|---|
|
GPSRE FrontEndTemp
|
|
| 3 | GST00003 |
| binary uint32 | size: 1 |
|---|
|
GPSRE NotUsed
|
|
| 4 | GST00004 |
| binary uint32 | size: 0:3 |
|---|
|
GPSRE SerialNumber
|
|
| 5 | GST00005 |
| binary uint32 | size: 0:1 |
|---|
|
GPSRE NomRedFlag
|
|
| 6 | GST00006 |
| binary uint32 | size: 0:1 |
|---|
|
GPSRE AllDataValidFlag
|
|
| 7 | GST00007 |
| binary uint32 | size: 0:3 |
|---|
|
GPSRE ReceiverMode
|
|
| 8 | GST00008 |
| binary uint32 | size: 1 |
|---|
|
GPSRE NofRecordsInBlock
|
|
| 9 | Group_8 |
| binary array[dim_0] |
|---|
dim_0: int(../GST00008)
| binary record | size: 8 |
|---|
| id | field name | definition |
|---|
| 0 | GST00009 |
| binary uint32 | size: 0:3 |
|---|
|
GPSRE ConstellationID
|
|
| 1 | GST00011 |
| binary uint32 | size: 1 |
|---|
|
GPSRE SpaceVehicleID
|
|
| 2 | GST00012 |
| binary uint32 | size: 0:5 |
|---|
|
GPSRE SignalType
|
|
| 3 | GST00013 |
| binary uint32 | size: 0:4 |
|---|
|
GPSRE AntennaID
|
|
| 4 | GST00093 |
| binary uint32 | size: 0:4 |
|---|
|
GPSRE NotUsed
|
|
| 5 | GST00015 |
| binary uint32 | size: 1 |
|---|
|
GPSRE SngleFreqChannelNr
|
|
| 6 | GST00117 |
| binary int32 | size: 2 |
|---|
|
GPSRE CarrNoisPwrDnsRtio
|
|
| 7 | GST00118 |
| binary int32 | size: 2 |
|---|
|
GPSRE CarrierAmplitude
|
|
|
|
|
| 10 | Spare_Align |
hidden: true
|
|
|
| 2 | crc |
|
|
|