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SMART-MR10 User Manual Rev 0B
Appendix B
Commands
B.6
PDPFILTER Enable, disable or reset the PDP filter
This command enables, disables or resets the Pseudorange/Delta-Phase (PDP) filter. The main
advantages of the Pseudorange/Delta-Phase (PDP) implementation are:
•
Smooths a jumpy position
•
Bridges outages in satellite coverage (the solution is degraded from normal but
there is at least a reasonable solution without gaps)
Enable the PDP filter to output the PDP solution in BESTPOS, BESTVEL and NMEA logs.
Refer to the
Operation
OEMV Installation and Operation Manual
on configuring your receiver for PDP or
GL1DE
operation.
GL1DE
Position Filter
GL1DE
is a mode of the PDP
1
filter which optimizes the position for consistency over time rather than
absolute accuracy. This is ideally in clear sky conditions where the user needs a tight, smooth, and
consistent output. The
GL1DE
filter works best with CDGPS or WAAS. The PDP filter is smoother
than a least squares fit but is still noisy in places. The
GL1DE
filter produces a very smooth solution
with consistent rather than absolute position accuracy. There should be less than 1 cm difference
typically from epoch to epoch.
GL1DE
also works in single point, DGPS and OmniSTAR VBS modes.
See also the PDPMODE command on
Abbreviated ASCII Syntax:
Message ID: 424
pdpfilter switch
Factory Default:
pdpfilter disable
ASCII Example:
pdpfilter enable
1.
Refer also to our application note on
Pseudorange/Delta-Phase (PDP)
, available on our
http://www.novatel.com/support/applicationnotes.htm
Field
Field
Type
ASCII
Value
Binary
Value
Description
Binary
Format
Binary
Bytes
Binary
Offset
1
PDPFILTER
header
-
-
This field contains the command
name or the message header
depending on whether the
command is abbreviated ASCII,
ASCII or binary, respectively.
-
H
0
2
switch
DISABLE
0
Enable/disable/reset the PDP filter.
A reset clears the filter memory so
that the pdp filter can start over.
Enum
4
H
ENABLE
1
RESET
2
