BESTGNSSPOS

Best GNSS Position

Platform: 

OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7-S

This log contains the best available GNSS position (without INS) computed by the receiver. In addition, it reports several status indicators, including differential age, which is useful in predicting anomalous behavior brought about by outages in differential corrections. A differential age of 0 indicates that no differential correction was used.

With the system operating in an RTK mode, this log reflects the latest low latency solution for up to 60 seconds after reception of the last base station observations. After this 60 second period, the position reverts to the best solution available and the degradation in accuracy is reflected in the standard deviation fields. If the system is not operating in an RTK mode, pseudorange differential solutions continue for the time specified in the PSRDIFFTIMEOUT command.

BESTGNSSPOS always outputs positions at the antenna phase center.

Message ID: 1429

Log Type: Synch

Recommended Input:

log bestgnssposa ontime 1

ASCII Example:

#BESTGNSSPOSA,USB1,0,65.0,FINESTEERING,2209,487877.000,02000020,c292,16809;SOL_COMPUTED,PPP,51.15043712234,-114.03067870773,1097.3556,-17.0001,WGS84,0.0176,0.0123,0.0317,"TSTR",17.000,0.000,42,38,38,37,00,00,3f,37*5fea7d4b

Field

Field type

Data Description

Format

Binary Bytes

Binary Offset

1

Log header

BESTGNSSPOS header

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

-

H

0

2

Sol Status

Solution status, see Table: Solution Status

Enum

4

H

3

Pos Type

Position type, see Table: Position or Velocity Type

Enum

4

H+4

4

Lat

Latitude (degrees)

Double

8

H+8

5

Lon

Longitude (degrees)

Double

8

H+16

6

Hgt

Height above mean sea level (metres)

Double

8

H+24

7

Undulation

Undulation - the relationship between the geoid and the ellipsoid (m) of the chosen datum

When using a datum other than WGS84, the undulation value also includes the vertical shift due to differences between the datum in use and WGS84.

Float

4

H+32

8

Datum ID

Datum ID

61 = WGS84

63 = USER

Enum

4

H+36

9

Lat σ

Latitude standard deviation (metres)

Float

4

H+40

10

Lon σ

Longitude standard deviation (metres)

Float

4

H+44

11

Hgt σ

Height standard deviation (metres)

Float

4

H+48

12

Stn ID

Base station ID

Char[4]

4

H+52

13

Diff_age

Differential age in seconds

Float

4

H+56

14

Sol_age

Solution age in seconds

Float

4

H+60

15

#SVs

Number of satellites tracked

Uchar

1

H+64

16

#solnSVs

Number of satellite solutions used in solution

Uchar

1

H+65

17

#solnL1SVs

Number of satellites with L1/E1/B1 signals used in solution

Uchar

1

H+66

18

#solnMultiSVs

Number of satellites with multi-frequency signals used in solution

Uchar

1

H+67

19

Reserved

Uchar

1

H+68

20

ext sol stat

Extended solution status (see Table: Extended Solution Status)

Hex

1

H+69

21

Galileo and BeiDou sig mask

Galileo and BeiDou signals used mask (see Table: Galileo and BeiDou Signal-Used Mask)

Hex

1

H+70

22

GPS and GLONASS sig mask

GPS and GLONASS signals used mask (see Table: GPS and GLONASS Signal-Used Mask)

Hex

1

H+71

23

xxxx

32-bit CRC (ASCII and Binary only)

Hex

4

H+72

24

[CR][LF]

Sentence terminator (ASCII only)

-

-

-