Справочник Пользователя для Novatel OM-20000041
D
Logs summary
172
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
MKTA/B
Time of Mark Input
This log contains the time of the detected Mark Input pulse leading edge as detected at the Mark Input I/O port.
The resolution of this measurement is 49ns. Refer to the GPSCard Installation and Operating Manual Appendix
for the Mark Input pulse specifications.
The resolution of this measurement is 49ns. Refer to the GPSCard Installation and Operating Manual Appendix
for the Mark Input pulse specifications.
MKTA
Structure:
Example:
$MKTA,653,338214.773382376,0.000504070,0.000000013,-8.000000000,0 *05[CR][LF]
MKTB
Format:
Message ID = 04
Message byte count = 52
$MKTA
week
seconds
offset
offset std
utc offset
cm status
*xx
[CR][LF]
Field #
Field type
Data Description
Example
1
$MKTA
Log header
$MKTA
2
week
GPS week number
653
3
seconds
Seconds into the week as measured from the receiver clock, coincident with the
time of electrical closure on the Mark Input port.
time of electrical closure on the Mark Input port.
338214.773382376
4
offset
Receiver clock offset, in seconds. A positive offset implies that the receiver clock
is ahead of GPS Time. To derive GPS time, use the following formula:
GPS time = receiver time - (offset)
is ahead of GPS Time. To derive GPS time, use the following formula:
GPS time = receiver time - (offset)
0.000504070
5
offset std
Standard deviation of receiver clock offset, in seconds
0.000000013
6
utc offset
This field represents the offset of GPS time from UTC time, computed using
almanac parameters. To reconstruct UTC time, algebraically subtract this
correction from field 3 above (GPS seconds).
UTC time = GPS time
almanac parameters. To reconstruct UTC time, algebraically subtract this
correction from field 3 above (GPS seconds).
UTC time = GPS time
-
(utc offset)
-8.000000000
7
cm status
Receiver Clock Model Status where 0 is valid and values from -20 to -1 imply that
the model is in the process of stabilization
the model is in the process of stabilization
0
8
*xx
Checksum
*05
9
[CR][LF]
Sentence terminator
[CR][LF]
Field #
Data
Bytes
Format
Units
Offset
1
Sync
3
char
0
(header)
Checksum
1
char
3
Message ID
4
integer
4
Message byte count
4
integer
8
2
Week number
4
integer
weeks
12
3
Seconds of week
8
double
seconds
16
4
Clock offset
8
double
seconds
24
5
StdDev clock offset
8
double
seconds
32
6
UTC offset
8
double
seconds
40
7
Clock model status
4
integer
48