Navman 12 Designer's Manual page 15

Word No
Non-DR link: polar navigation
DR navigation link:
13 Bit 0 = polar navigation
Bit 15 to 1 = heading uncertainty standard
deviation (Note 12)
14 GPS week number
15-16 GPS seconds from epoch
17-18 GPS nanoseconds from epoch
19
20
21
22
23
24
25-26 UTC nanoseconds from epoch
27-28
29-30
31-32
33 Geoidal separation
34-35
36
37 Magnetic variation
38
39 Map datum (Note 13)
40-41 Expected horizontal position error (Note 14)
42-43 Expected vertical position error (Note 14)
44-45 Expected time error (Note 14)
46 Expected horizontal velocity error (Note 14)
47-48 Clock bias (Note 14)
49-50 Clock bias standard deviation (Note 14)
51-52 Clock drift (Note 14)
53-54 Clock drift standard deviation (Note 14)
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Note 1: Set time is an internal 10 millisecond (T10) count since power-on initialisation enabled the processor interrupts. It is not used
to derive GPS time, but only serves to provide a sequence of events knowledge. The set time or T10 count references the receiver's
internal time at which the message was created for output. The T10 range is approximately 71 weeks.
Note 2: The sequence number is a count that indicates whether the data in a particular binary message has been updated or
changed since the last message output.
Note 3: The satellite measurement sequence number relates the position solution data to a particular set of satellite measurements
found in binary Messages 1002 and 1007 (channel summary message and channel measurement message, respectively).
Note 4: The value of this data item was initially set using the solution validity criteria message (Message 1217).
Note 5: Either no DR messages are being received or data has been detected as inconsistent with GPS.
Note 6: No calibration is available for DR measurements from concurrent GPS or from stored values.
Note 7: No calibration is available for DR measurements from concurrent GPS.
Note 8: It should be noted that bit zero of word 11 does not refer to a solution propagated by the navigation software. This bit is used
to indicate if the solution was propagated by the serial I/O manager to generate a 1 Hz output message when no new navigation
state data was available. This is an error condition potentially caused by a shortage of throughput in one cycle. It is unlikely to occur
and is self correcting. Normal state propagation which occurs within the navigation software with or without measurements available
for processing does not cause this bit to be set.
Note 9: Navigation is based on GPS alone. Current system or GPS/DR with no DR measurements available.
Note 10: DR is running with concurrent calibration by GPS.
Note 11: DR is running with calibration from stored values from prior operating session.
Note 12: An uncertainty value of 0x7FFF indicates unknown heading. A message value 0x000D indicates Polar navigation equals
true and heading uncertainty SD equals 0.06 (hex value 0x000C).
Note 13: Appendix B contains map datum codes from 0 to 188. Codes 300 to 304 are user-defined.
Note 14: The data displayed by this field is not valid until the receiver is in navigation mode.
Table 3-5 (2 of 2) Message 1000 (geodetic position status output)
MN002000A © 2004 Navman NZ Ltd. All rights reserved. Proprietary information and specifications subject to change without notice.
Name
UTC day
UTC month
UTC year
UTC hours
UTC minutes
UTC seconds
Latitude
Longitude
Height
Ground speed
True course
Climb rate
Data checksum
Type Units
Bit
degrees
Bit
UI
UI weeks
UDI s 0 to 604 799
UDI ns 0 to 999 999 999
UI day
UI month
UI year 1980 to 2079
UI h
UI min
UI s
UDI ns 0 to 999 999 999
DI rad
DI rad
DI m ±0 to 50 000
1 m
UDI m/s
UI rad
1 rad
1 m/s
UI 0 to 188 and 300 to 304
UDI m 0 to 320 000 000
UDI m 0 to 250 000
UDI m 0 to 300 000 000
UI m/s
DI m ±0 to 9 000 000
DI m ±0 to 9 000 000
DI m/s
DI m/s
Range Resolution
1 = true
0.01
1 = true
0 to 300
0 to 32 767
1 to 31
1 to 12
0 to 23
0 to 59
0 to 59
±0 to �/2 10
±0 to � 10
10
±0 to 200 10
0 to 1000 10
0 to 2� 10
±0 to �/4 10
±300 10
10
10
10
0 to 10 000 10
10
10
±0 to 1000 10
±0 to 1000 10
-8
-8
-2
-2
-2
-3
-4
-2
-2
-2
-2
-2
-2
-2
-2
-2
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