Novatel OM-20000041 用户手册
D
Logs summary
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
223
WALB
Format:
Message ID = 81
Message byte count = 92
Table D-13
Health and Status Bits
*Note:
Read the binary output from the Health field from right to left. The first bit to the right, the least significant bit,
is bit 0 and so on to the left.
Table D-14
Data ID Type
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
ulong
weeks
12
3
Seconds of week
8
double
seconds
16
4
WAAS week number
4
integer
weeks
24
5
WAAS seconds of week
4
integer
seconds
28
6
WAAS satellite PRN number
4
integer
32
7
WAAS signal specification version
4
integer
36
8
WAAS satellite health
4
integer
40
9
Position x coordinate of WAAS satellite
8
double
meters
44
10
Position y coordinate of WAAS satellite
8
double
meters
52
11
Position z coordinate of WAAS satellite
8
double
meters
60
12
Velocity x coordinate of WAAS satellite
8
double
m/s
68
13
Velocity y coordinate of WAAS satellite
8
double
m/s
76
14
Velocity z coordinate of WAAS satellite
8
double
m/s
84
Bit Number*
Description
Range Values
0
Ranging
0 = On
1 = Off
1
Corrections
0 = On
1 = Off
2
Broadcast integrity
0 = On
1 = Off
3
Reserved
-
4-7
Service Provider ID
-
Data ID
Type (Service Provider)
0
WAAS (Wide Area Augmentation System)
1
EGNOS (European Geostationary Navigation Overlay Service)
2
MSAS (Multi-Functional Transport Satellite (MTSAT) based Augmentation System)
3-15
Reserved