TRACKSTAT

Tracking status

Platform:

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

Firmware Stream:     

The TRACKSTAT log contains an entry for each channel. If there are multiple signal channels for one satellite (for example L1, L2 P(Y), L2C, and L5 for GPS), then there will be multiple entries for that satellite.

As shown in Table: Channel Tracking Status these entries can be differentiated by bit 20, which is set if there are multiple observables for a given satellite, and bits 21-25, which denote the signal type for the observation.

A zero in the PRN/slot of the TRACKSTAT log indicates the channel should be considered idle with the exception of those for GLONASS. A GLONASS channel should only be considered idle if the tracking state is 0 in the channel tracking status word.

For dual antenna receivers, a TRACKSTAT_1 log can be requested to get TRACKSTAT data from the second antenna. As described in Table: Binary Message Header Structure, the message type indicates the log is from the second antenna. To request an ASCII log enter TRACKSTATA_1 and for a binary log enter TRACKSTATB_1.

Message ID: 83

Log Type: Synch

Recommended Input:

log trackstata ontime 1

ASCII Example:

#TRACKSTATA,COM1,0,49.5,FINESTEERING,1337,410139.000,02000000,457c,1984;
SOL_COMPUTED,PSRDIFF,5.0,30,
1,0,18109c04,21836080.582,-2241.711,50.087,1158.652,0.722,GOOD,0.973,
1,0,11309c0b,21836083.168,-1746.788,42.616,1141.780,0.000,OBSL2,0.000,
30,0,18109c24,24248449.644,-2588.133,45.237,939.380,-0.493,GOOD,0.519,
30,0,11309c2b,24248452.842,-2016.730,38.934,939.370,0.000,OBSL2,0.000,
...
14,0,18109da4,24747286.206,-3236.906,46.650,1121.760,-0.609,GOOD,0.514,
14,0,11309dab,24747288.764,-2522.270,35.557,1116.380,0.000,OBSL2,0.000,
0,0,0c0221c0,0.000,0.000,0.047,0.000,0.000,NA,0.000,
0,0,0c0221e0,0.000,0.000,0.047,0.000,0.000,NA,0.000*255a732e

Field

Field Type

Description

Format

Binary Bytes

Binary Offset

1

TRACKSTAT header

Log header. See Messages for more information.

 

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

cutoff

GPS tracking elevation cut-off angle

Float

4

H+8

5

# chans

Number of hardware channels with information to follow

Ulong

4

H+12

6

PRN/slot

Satellite PRN number of range measurement

Refer to PRN Numbers

Short

2

H+16

7

glofreq

(GLONASS Frequency + 7), see GLONASS Slot and Frequency Numbers

Short

2

H+18

8

ch-tr-status

Channel tracking status (see Table: Channel Tracking Status)

Ulong

4

H+20

9

psr

Pseudorange (m) - if this field is zero but the channel tracking status in the previous field indicates that the card is phase locked and code locked, the pseudorange has not been calculated yet

Double

8

H+24

10

Doppler

Doppler frequency (Hz)

Float

4

H+32

11

C/No

Carrier to noise density ratio (dB-Hz)

Float

4

H+36

12

locktime

Number of seconds of continuous tracking (no cycle slips)

Float

4

H+40

13

psr res

Pseudorange residual from pseudorange position filter (m)

Float

4

H+44

14

reject

Range reject code from pseudorange position filter (see Table: Observation Statuses)

Enum

4

H+48

15

psr weight

Pseudorange filter weighting

Float

4

H+52

16...

Next PRN offset = H+16+(#chans x 40)

17

xxxx

32-bit CRC (ASCII and Binary only)

Ulong

4

H+16
(#chans x 40)

18

[CR][LF]

Sentence terminator (ASCII only)

-

-

-

 

OM-20000167 v13

October 2019

Email comments to NovAtel_TPUBS@NovAtel.com

7.07.03 / OM7MR0703RN0000
PP7 07.07.03 / EP7PR0703RN0000
7.06.03 / OA7CR0603RN0000