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MiLLennium GPSCard SW Version 4.503/4.52 Command Descriptions Manual Rev 2 249
Table 1-1 GPSCard Pseudorange Differential Initialization Summary
Table 1-2 Latency-Induced Extrapolation Error
Reference Station Remote Station
Required:
FIX POSITION lat lon hgt id (health)
LOG port DATATYPE ontime 5
Recommended Options:
LOG DATATYPES (binary):
RTCMB
RTCAB
RTCM
RTCA
LOG DATATYPES (ascii):
RTCMA
RTCAA
Related Commands/Logs:
RTCMRULE
DATUM
Required:
ACCEPT port DATATYPE
Recommended Options:
ACCEPT DATATYPES (binary):
RTCM
RTCA
ACCEPT COMMANDS (ascii):
RTCMA
RTCAA
Related Commands/Logs:
RTCMRULE
DATUM
POSA/B
VLHA/B
CDSA/B
GPGGA
Example 1:
fix position 51.3455323 -114.2895345 1201.123 555 0
log com 1 RTCM ontime 2
Example 2:
fix position 51.3455323 -114.2895345 1201.123 555 0
log com2 rtcaa ontime 2
Example 1:
accept com2 rtcm
log com1 posa ontime 1
Example 2:
accept com2 commands
log com1 posa ontime 0.2
log com1 vlha ontime 0.2
Note: Italicized entries indicate user definable.
Time since last reference station observation Typical extrapolation error (CEP)
0-2 seconds 1 cm/sec
2-7 seconds 2 cm/sec
7-30 seconds 5 cm/sec