Novatel OM-20000041 Manuel D’Utilisation

Page de 276
D
Logs summary
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
171
MKPA/B
Mark Position
This log contains the estimated position of the antenna at detected mark impulse. It uses the last valid position and
velocities to extrapolate the position at time of mark. Refer to the GPSCard Installation and Operating Manual
Appendix
 for Mark Input pulse specifications. The latched time of mark impulse is in 
GPS
 weeks and seconds into
the week. The resolution of the latched time is 49 ns.
MKPA
Structure
:
Example:
$MKPA,653,338214.773382376,51.11227014,-114.03907552,1003.799,-16.199,61,
7.793,3.223,34.509,0*3C[CR][LF]
MKPB
Format:
Message ID = 05
Message byte count = 88
$MKPA
week
seconds
lat
lon
hgt
undulation
datum 
ID
lat std
lon std
hgt std
sol status
*xx
[CR][LF]
Field #
Field type
Data Description
Example
1
$MKPA
Log header
$MKPA
2
week
GPS week number
653
3
seconds
GPS seconds into the week measured from the receiver clock, coincident with the 
time of electrical closure on the Mark Input port.
338214.773382
376
4
lat
Latitude of position in current datum, in degrees/decimal degrees 
(DD.dddddddd), where a negative sign implies South latitude
51.11227014
5
lon
Longitude of position in current datum, in degrees/decimal degrees 
(DDD.dddddddd), where a negative sign implies West longitude
-114.03907552
6
hgt
Height of position in current datum, in meters with respect to MSL
1003.799
7
undulation
Geoid undulation, in meters (see Figure C-6, Page 130)
-16.199
8
datum ID
Current datum (see Table G-2 in Appendix G, Page 234) I.D. #
61
9
lat std
Standard deviation of latitude solution element, in meters
7.793
10
lon std
Standard deviation of longitude solution element, in meters
3.223
11
hgt std
Standard deviation of height solution element, in meters
34.509
12
sol status
Solution status as listed in Table D-1
0
13
*xx
Checksum
*3C
14
[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
Latitude
8
double
degrees (+ is North, - is South)
24
5
Longitude
8
double
degrees (+ is East, - is West)
32
6
Height
8
double
meters with respect to MSL
40
7
Undulation
8
double
meters
48
8
Datum ID
4
integer
56
9
StdDev of latitude
8
double
meters
60
10
StdDev of longitude
8
double
meters
68
11
StdDev of height
8
double
meters
76
12
Solution status
4
integer
84