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MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1

Table 1-1

GPSCard Pseudorange Differential Initialization Summary

Initialization - Reference Station

Differential mode of operation is established at the reference station through a two step process: fix position and
logging observation and correction data.

FIX POSITION

The reference station must initialize the precise position of its reference antenna phase centre (lat/lon/hgt). This is
accomplished by utilizing the GPSCard

FIX

POSITION

command. The syntax is as follows:

Syntax:

Example:

fix position 51.3455323,-114.2895345,1201.123,555,0

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 (acii):

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.

FIX POSITION

lat

lon

height

station id

health