Motorola M12 Oncore User Manual page 82

Response Message
(Continued)
Motorola GPS Products
M12 Oncore User' s Guide Supplement
Revision 1.0 01/25/00
POSITION/STATUS/DATA MESSAGE (12 CHANNEL)
Motorola Binary Format
Geometry
dd current DOP(0.1 res)
(PDOP for 3D fix, HDOP for 2D fix, 0 No Fix)
Satellite Data
n number of visible satellites
t number of tracked satellites
Channel Data
i SVID
m mode
s signal strength
i IODE
dd channel status (16 bits)
(msb) Bit 15:
Bit 14:
Bit 13:
Bit 12:
Bit 11:
Bit 10:
Bit 9:
Bit 8:
Bit 7:
Bit 6:
Bit 5:
Bit 4:
Bits 3-0:
*No accuracy prediction is available – unauthorized users are advised to use the SV at their
own risk)
0...999 (0.0 to 99.9 DOP)
0...12
0...12
0...37
0...8
0...255
0...255
Reserved
Reserved
Reserved
Reserved
Used For Time
Differential Corrections Available
Invalid Data
Parity Error
Used For Position Fix
Satellite Momentum Alert Flag
Satellite Anti-Spoof Flag Set
Satellite Reported Unhealthy
Satellite Accuracy as follows
(per para 20.3.3.3.1.3 ICD-GPS-200)
0000 (0) 0.00 <URA<=2.40
0001 (1) 2.40 <URA<=3.40
0010 (2) 3.40 <URA<=4.85
0011 (3) 4.85 <URA<=6.85
0100 (4) 6.85 <URA<=9.65
0101 (5) 9.65 <URA<=13.65
0110 (6) 13.65 <URA<=24.00
0111 (7) 24.00 <URA<=48.00
1000 (8) 48.00 <URA<=96.00
1001 (9) 96.00 <URA<=192.00
1010 (10) 192.00 <URA<= 384.00
1011 (11) 384.00 <URA<=768.00
1100 (12) 768.00 <URA<=1536.00
1101 (13) 1536.00 <URA<=3072.00
1110 (14) 3072.00 <URA<=6144.00
1111 (15) 6144.00 <URA*
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