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Navman 11 User Manual

Page 19

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19

MN002000A © 2004 Navman NZ Ltd. All rights reserved. Proprietary information and specifications subject to change without notice.

Message ID: 1007
Rate: Variable
Message Length: 154 words

Word No.

Name

Type

Units

Range

Resolution

1-4

Message header

5

Header checksum

6-7

Set time (Note 1)

UDI

10 ms ticks 0 to 4 294 967 295

8

Sequence number (Note 2)

I

0 to 32 767

9

Satellite measurement sequence number (Note 3)

I

0 to 32 767

Channel measurement data

10 + 12*j

Pseudo-range (Note 4)

TI

m

±1.4

14

10

-3

13 + 12*j

Pseudo-range rate

DI

m/s

±21 474 836

10

-3

15 + 12*j

Carrier phase

TI

m

±1.4

14

10

-3

18 + 12*j

Carrier phase bias

TI

m

±1.4

14

10

-3

21 + 12*j

Phase bias count

UI

0 to 65 535

154

Data checksum

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: j = 0 to 11

Table 3-9 Message 1007 (channel measurement)

3.5.1.5 Message 1007 (channel measurement)

This message provides measurement and

associated data for each of the receiver’s

12 channels. The contents of the ‘channel

measurement’ message are described in

Table 3-9.

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