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Description
Offset
Factor
Units
Type
Length
(bits)
Offset
(bits)
Table 63. Identifier 629h (1577), approximate latitude and longitude
0
32
S
degrees
1e-7
0
Approximate latitude
32
32
S
degrees
1e-7
0
Approximate longitude
Before initialisation the approximate latitude and longitude message will have the GNSS measurement of
latitude and longitude (at the GNSS antenna location). After initialisation it will contain the same latitude
and longitude as message 601h.
m
0.001
Description
Offset
S
Factor
Units
32
Type
0
Length
(bits)
Offset
(bits)
Table 64. Identifier 62Ah (1578), approximate altitude
0
Approximate altitude
By default the altitude is output relative to mean sea level, not WGS 84. See altitude in the NCOM
description for information on how to change this.
Before initialisation the approximate altitude message will have the GNSS measurement of altitude (at
the GNSS antenna location). After initialisation it will contain the same altitude as message 602h.
S
m/s
0.01
0
Approximate north velocity
16
16
S
m/s
0.01
0
Approximate east velocity
32
16
S
m/s
0.01
0
Approximate down velocity
48
16
U
m/s
0.01
0
Approximate horizontal speed
Offset
16
Type
0
Offset
(bits)
Factor
Description
Units
Length
(bits)
Table 65. Identifier 62Bh (1579), approximate velocity
Before initialisation the approximate velocity message will have the GNSS measurement of velocity (at
the GNSS antenna location). After initialisation it will contain the same altitude as message 603h.
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