RAIMSTATUS

RAIM status

Platform:

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

This log provides information on Receiver Autonomous Integrity Monitoring (RAIM) status (refer to the RAIMMODE command).

Message ID: 1286

Log Type: Synch

Recommended Input:

log raimstatusa ontime 1

ASCII Example:

#RAIMSTATUSA,USB1,0,54.0,FINESTEERING,2209,512358.000,02000020,bf2d,16809;DEFAULT,PASS,NOT_AVAILABLE,0.000,NOT_AVAILABLE,0.000,0*3f408598

Field

Field Type

Description

Format

Binary Bytes

Binary Offset

1

Log header

RAIMSTATUS header

For information about log headers, see ASCII, Abbreviated ASCII or Binary.

-

H

0

2

RAIM Mode

RAIM mode (refer to Table: RAIM Mode Types)

Enum

4

H

3

Integrity status

Integrity Status (see Table: Integrity Status)

Enum

4

H+4

4

HPL status

Horizontal protection level status (see Table: Protection Level Status)

Enum

4

H+8

5

HPL

Horizontal protection level (m)

Double

8

H+12

6

VPL status

Vertical protection level status (see Table: Protection Level Status)

Enum

4

H+20

7

VPL

Vertical protection level (m)

Double

8

H+24

8

#SVs

Number of excluded satellites

Ulong

4

H+32

9

System

Satellite system (see Table: Satellite System)

Enum

4

H+36

10

Satellite ID

In binary logs, the satellite ID field is 4 bytes. The 2 lowest order bytes, interpreted as a USHORT, are the system identifier. For instance, the PRN for GPS or the slot for GLONASS. The 2 highest-order bytes are the frequency channel for GLONASS, interpreted as a SHORT and zero for all other systems.

In ASCII and abbreviated ASCII logs, the satellite ID field is the system identifier. If the system is GLONASS and the frequency channel is not zero, then the signed channel is appended to the system identifier. For example, slot 13, frequency channel -2 is output as 13-2.

Ulong

4

H+40

11

Next offset field = H+36+(#SVs * 8)

12

xxxx

32-bit CRC (ASCII and Binary only)

Ulong

4

H+36 +
(#SVs * 8)

13

[CR][LF]

Sentence terminator (ASCII only)

 

 

 

RAIM Mode Types

Binary

ASCII

Description

0

DISABLE

Do not do integrity monitoring of least squares solution

1

USER

User will specify alert limits and probability of false alert

2

DEFAULT

Use NovAtel RAIM (default)

3

APPROACH

Default numbers for non-precision approach navigation modes are used - HAL = 556 m (0.3 nm), VAL = 50 m for LNAV/VNAV

4

TERMINAL

Default numbers for terminal navigation mode are used - HAL = 1 nm, no VAL requirement

5

ENROUTE

Default numbers for enroute navigation mode are used - HAL = 2 nm, no VAL requirement

Integrity Status

Binary

ASCII

Description

0

NOT_AVAILABLE

RAIM is unavailable because either there is no solution or because the solution is unique, that is, there is no redundancy

1

PASS

RAIM succeeded. Either there were no bad observations or the bad observations were successfully removed from the solution

2

FAIL

RAIM detected a failure and was unable to isolate the bad observations

Protection Level Status

Binary

ASCII

Description

0

NOT_AVAILABLE

When RAIM is not available. For example, immediately after issuing a FRESET command or when there are not enough satellites tracked to have the required redundant observations.

1

PASS

Current protection levels are below alert limits, meaning positioning accuracy requirements are fulfilled.

HPL < HAL

VPL < VAL

2

ALERT

Current protection levels are above alert limits, meaning required positioning accuracy cannot be guaranteed by RAIM algorithm.

HPL ≥ HAL

VPL ≥ VAL