| id | field name | definition |
|---|
| 0 | start_of_observation_time |
| binary time | size: 12 |
|---|
Start time at start of BRC
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 | observation_validity_indicator |
| binary uint8 | size: 1 |
|---|
|
TRUE = some critical BRC source packets invalid; FALSE = All critical BRC SP invalid
|
|
| 2 | measurement_validity_indicator |
| binary array[67] | size: 1072 |
|---|
| binary record | size: 16 |
|---|
Level 1A Measurement Validity Indicator
| id | field name | definition |
|---|
| 0 | measurement_data_present |
| binary uint8 | size: 1 |
|---|
|
TRUE = Measurement data is present in BRC. SID (measurement index + 4) missing
|
|
| 1 | mie_measurement_sp_valid |
| binary uint8 | size: 1 |
|---|
|
TRUE = Mie Measurement Source Packet Valid
|
|
| 2 | rayleigh_measurement_sp_valid |
| binary uint8 | size: 1 |
|---|
|
TRUE = Rayleigh Measurement Source Packet Valid
|
|
| 3 | measurement_laser_freq_locked |
| binary uint8 | size: 1 |
|---|
|
TRUE = Number of Lasaer frequency locked is over Meas_Caity_Locked_status_Thresh (from processing paramenters file); FALSE = otherwise
|
|
| 4 | spacecraft_attitude_on_target |
| binary uint8 | size: 1 |
|---|
|
TRUE = AOCS status indicates the spacecraft was in a stable state during any part of the measurement, as determined by AOCS status samples (SID1) falling within measurement interval
|
|
| 5 | velocity_of_attitude_uncertainty_error |
| binary double | size: 8 |
|---|
Velocity of attitude uncertainty error
unit: "m/s"
|
|
| 6 | spare_1 |
| binary bytes | size: 3 |
|---|
|
Spare
|
hidden: true
|
|
|
|
| 3 | reference_pulse_validity_indicator |
| binary record | size: 1024 |
|---|
Reference Pulse Validity Indicator
| id | field name | definition |
|---|
| 0 | mie_reference_pulses_present |
| binary uint8 | size: 1 |
|---|
|
TRUE = Mie Reference Pulses are present in BRC, SID3 is missing
|
|
| 1 | rayleigh_reference_pulses_present |
| binary uint8 | size: 1 |
|---|
|
TRUE = Rayleigh Reference Pulses are present in BRC, SID4 is missing
|
|
| 2 | mie_reference_pulse_sp_valid |
| binary uint8 | size: 1 |
|---|
|
TRUE = Mie Reference Pulse Source Packet Valid
|
|
| 3 | rayleigh_reference_pulse_sp_valid |
| binary uint8 | size: 1 |
|---|
|
TRUE = Rayleigh Reference Pulse Source Packet Valid
|
|
| 4 | laser_freq_locked_flag |
| binary array[1003] | size: 1003 |
|---|
| binary uint8 | size: 1 |
|---|
|
TRUE = Laser frequency is locked for the pulse
|
|
|
| 5 | spare_2 |
| binary bytes | size: 17 |
|---|
|
Spare
|
hidden: true
|
|
|