PDPFILTER

Enables, disables or resets the PDP filter

Platform:

OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7, SMART2

This command is used to enable, disable or reset the Pseudorange/Delta-Phase (PDP) filter. The main advantages of the 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 the BESTPOS log, BESTVEL log and NMEA Standard Logs.

    Refer to GLIDE for information on configuring your receiver for PDP or GLIDE operation.

GLIDE Position Filter

GLIDE is a mode of the PDP filter that optimizes the position for consistency over time rather than absolute accuracy. This is ideal in clear sky conditions where the user needs a tight, smooth and consistent output. The GLIDE filter works best with SBAS. The PDP filter is smoother than a least squares solution but is still noisy in places. The GLIDE filter produces a very smooth solution with relative rather than absolute position accuracy. There should typically be less than 1 centimetre difference in error from epoch to epoch. GLIDE also works in single point and DGPS modes. See also the PDPMODE command and the PDPPOS log, PDPVEL log and PDPXYZ log.

Refer also to the application note APN-038: Pseudorange/Delta-Phase (PDP) and GLIDE Filters, available at novatel.com/support/support-materials/application-notes.

Message ID: 424

Abbreviated ASCII Syntax:

PDPFILTER switch

Factory Default:

PDPFILTER disable

ASCII Example:

PDPFILTER enable

Field

Field Type

ASCII Value

Binary Value

Description

Format

Binary Bytes

Binary Offset

1

Command header

-

-

PDPFILTER header

This field contains the command name for abbreviated ASCII or the message header for ASCII or Binary.

-

H

0

2

switch

DISABLE

0

Disable the PDP filter.

Enum

4

H

ENABLE

1

Enable the PDP filter.

RESET

2

Reset the PDP filter. A reset clears the filter memory so that the PDP filter can start over.