Novatel OM-20000041 用户手册
D
Logs summary
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
155
ETSA/B
Extended Tracking Status
These logs provide channel tracking status information for each of the GPSCard parallel channels.
NOTE:
This log is intended for status display only; since some of the data elements are not synchronized
together, they are not to be used for measurement data. Please use the RGEA/B/D, SATA/B, and
SVDA/B logs to obtain synchronized data for post processing analysis.
SVDA/B logs to obtain synchronized data for post processing analysis.
If both the L1 and L2 signals are being tracked for a given PRN, two entries with the same PRN will appear in the
tracking status logs. As shown in Table D-5 Receiver Self Test Status Codes these entries can be differentiated by
bit 19, which is set if there are multiple observables for a given PRN, and bit 20, which denotes whether the
observation is for L1 or L2. This is to aid in parsing the data.
tracking status logs. As shown in Table D-5 Receiver Self Test Status Codes these entries can be differentiated by
bit 19, which is set if there are multiple observables for a given PRN, and bit 20, which denotes whether the
observation is for L1 or L2. This is to aid in parsing the data.
ETSA
Structure:
$ETSA
week
seconds
sol status
# obs
prn
ch-tr-status
dopp
C/No
residual
locktime
psr
reject code
:
prn
ch-tr-status
dopp
C/No
residual
locktime
psr
reject code
*xx
[CR][LF]
Field #
Field type
Data Description
Example
1
$ETSA
Log header
$ETSA
2
week
GPS week number
850
3
seconds
GPS seconds into the week (receiver time, not corrected for clock
error, CLOCKADJUST enabled)
error, CLOCKADJUST enabled)
332087.00
4
sol status
Solution status (see Table D-1, , Page 143)
0
5
# obs
Number of observations to follow
24
6
prn
Satellite PRN number (1-32) (channel 0)
7
7
ch-tr-status
Hexadecimal number indicating channel tracking status (See Table
D-7, Page 201)
D-7, Page 201)
00082E04
8
dopp
Instantaneous carrier Doppler frequency (Hz)
-613.5
9
C/No
Carrier to noise density ratio (dB-Hz)
54.682
10
residual
Residual from position filter (m)
27.617
11
locktime
Number of seconds of continuous tracking (no cycle slips)
12301.4
12
psr
Pseudorange measurement (m)
20257359.5
7
7
13
reject code
Indicates whether the range is valid (code = 0) or not (see Table D-
11, Page 213)
11, Page 213)
0
14-21
..
94-101
..
94-101
..
..
..
..
..
Next PRN #,ch-tr-status,dopp,C/No,residual,locktime,psr,reject code
..
Last PRN #,ch-tr-status,dopp,C/No,residual,locktime,psr,reject code
..
Last PRN #,ch-tr-status,dopp,C/No,residual,locktime,psr,reject code
102
*xx
Checksum
*19
103
[CR][LF]
Sentence terminator
[CR][LF]
.