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49
continues for a specified number of hours or until the estimated averaged position
error is within specified accuracy limits.
Averaging stops when the time limit or the horizontal standard deviation limit or the
vertical standard deviation limit is achieved. When averaging is complete, the FIX
POSITION command is automatically invoked.
If initiating differential logging, then issue the POSAVE command followed by the
SAVECONFIG command, the receiver averages positions after every power on or
reset. It then invokes the FIX POSITION command to enable it to send differential
corrections. POSAVE OFF can be input to erase the saved POSAVE command.
The unit of parameter maxtime is hour, and is meter for maxhstd (desired horizontal
standard deviation 0-100m) and maxvstd (desired vertical standard deviation 0-100m).
The minimal value of maxtime is 0.01, that is, 36 seconds.
Table 16 Implements base station position averaging
Name
Value
Command
POSAVE state [maxtime [maxhstd [maxvstd]]]
Example
POSAVE on 1 1 2
State
ON
OFF
Implements position averaging for base stations.
Delete the saved posave command.
2.2.14
PSRDIFFTIMEOUT
This command is used to set the maximum age of pseudorange differential correction
data to use when operating as a rover station. Pseudorange differential correction data
whose age is more than this value will not be used by the rover.
Table 17 PSRDIFFTIMEOUT
Name
Value
Command
PSRDIFFTIMEOUT delay
Example
PSRDIFFTIMEOUT 100
Function
Sets maximum age of pseudorange differential data