Ismcalibrationstatus Tec Self-Calibration Status - Novatel GPStation-6 User Manual

5.1.7

ISMCALIBRATIONSTATUS TEC self-calibration status

This log shows the status of a TEC self-calibration (see ISMCALIBRATE command) procedure used
to determine TEC bias caused by receiver RF delay. Once the calibration is complete the TEC
calibration values reported in this log can be used with the ISMTECCALIBRATION command to set
the TEC offsets used in the receiver calculations. If this log is output ONNEW it will stop being
produced once the calibration duration set using the ISMCALIBRATE command has passed. It can
also be logged ONCE at the end of calibration to report the final computed values.
The following information is included in this log:
• Duration that the calibration has been running at the time the log is output
• Number of measurement samples that have been included in calculating the current TEC
calibration value. Only measurements above the elevation cutoff specified with the
ISMCALIBRATE command are included in the calibration.
• The current TEC calibration value in units of TECU
• The standard deviation of the current TEC calibration value
Structure:
Recommended Input:
ASCII example:
#ISMCALIBRATIONSTATUSA,USB1,0,81.0,FINESTEERING,1666,430620.000,00000020,45d2
,10283;1680,2,
GPSL1CAL2Y,28,-27.513463974,1.702342391
GLOL1CAL2P,10,7.925333500,1.621402383
Field Field Type
1 ISMCALIBRATION
STATUS Header
2 Calibration time
3 # records
4 Signal type
5 # samples
6 TEC calibration
7 TEC Std.Dev
8 ... Next record offset =
H + 8 + (# records x
20)
variable xxxx
variable [CR][LF]
71
LOG ISMCALIBRATIONSTATUSA ONNEW
Data Description
Log header
Time in calibration mode (seconds)
Number of records in this log
Signal combination type (refer to Table 20,
Signal Combination Type
Number of samples collected
Current computed TEC calibration value
(TECU)
Standard deviation of TEC calibration (TECU) FLOAT
32-bit CRC (ASCII and Binary only)
Sentence terminator (ASCII only)
Message ID: 1406
Log Type: Asynch
Binary
Format
Bytes
H
ULONG 4
ULONG 4
ENUM 4
ULONG 4
FLOAT 4
4
HEX 4
- -
GPStation-6 User Manual Rev 2
Logs
Binary
Offset
0
H
H+4
H+8
H+12
H+16
H+20
H+8+ (#
records
x 20)
-