GRS messages. Kongsberg DPS 232

Kongsberg DPS 232

Telegram options

The telegram output configuration contains a list of options (see Telegram out properties,

Options drop-down list).

It is possible to avoid one GNS message per satellite system in use by checking the

Disable additional GNS messages when diffcorr is used for both GPS and GLONASS .

It is possible to use the last valid position in all GNS messages by checking the Use last valid position . The default is to present the current position.

A.9

GRS messages

This message is used to support RAIM (Receiver Autonomous Integrity Monitoring).

The message reports the range residuals in the position solution.

The message is as specified in NMEA 0183 version 3.0. The message structure is as follows:

Format

$--GRS,hhmmss.ss,d,x.x,x.x,x.x,x.x,x.x,x.x,x.x,x.x,x.x, x.x,x.x,x.x*hh

Format description

1 hhmmss.ss

= UTC time of the GGA or GNS fix associated with this sentence (hours, minutes, seconds)

2 d = Mode indicator: 0 or 1

3 x.x

= Range residuals in metres for satellites used in the navigation solution (null for unused fields). Order must match order of the satellite ID numbers in GSA. When

GRS is used, GSA and GSV are generally required. Also applies to steps 6 — 11

4 ...

5 ...

6 ...

7 ...

8 ...

9 x.x

10 *hh = Checksum.

A.10

GSA messages

The GSA message presents DOP values and satellites used in the position solution. The message is as specified in NMEA 0183 version 3.0. The message structure is as follows:

104

G210-14/3.0