Novatel 01018518 User Manual

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 chapter of the 

operation.

GL1DE

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 page 85.

pdpfilter switch

pdpfilter disable

pdpfilter enable

1.

Refer also to our application note on Pseudorange/Delta-Phase (PDP), available on our 
Web site as APN-038 at 

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