Novatel GPStation-6, Руководство пользователя

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Messages
GPStation-6 User Manual Rev 2
34
Table 4: ASCII Message Header Structure
3.3.1 Binary
Binary messages are meant strictly as a machine readable format. They are also ideal for applications
where the amount of data transmitted is fairly high. Due to the inherent compactness of binary as
opposed to ASCII data, messages are much smaller. The smaller message size allows a larger amount
of data to be transmitted and received by the receiver’s communication ports. The structure of all
Field # Field Name
Field
Type
Description
Ignored on
Input
1 Sync Char
Sync
character. The ASCII message is always preceded
by a single ‘#’ symbol
N
2 Message Char The ASCII name of the log or command (lists are in
Table
10, page 44
and
Table 52, page 269
)
N
3 Port Char The name of the
port
from which the log was generated.
The string is made up of the port name followed by an _x
where x is a number from 1 to 31 denoting the virtual
address of the port. If no virtual address is indicated, it is
assumed to be address 0
Y
4 Sequence # Long Used for multiple related logs. It is a number that counts
down from N-1 to 0, where 0 means it is the last one of the
set. Most logs only come out one at a time in which case
this number is 0
N
5 % Idle Time Float The minimum percentage of time the processor is idle,
between successive logs, with the same Message ID
Y
6 Time Status Enum The value indicates the quality of the GPS reference time
(see
Table 9, GISTM Commands
on
page 47
)
Y
7 Week Ulong GPS reference week number Y
8 Seconds GPSec
Seconds
from the beginning of the GPS reference week;
accurate to the millisecond level
Y
9 Receiver
Status
Ulong An eight digit hexadecimal number representing the
status of various hardware and software components of
the receiver, between successive logs, with the same
Message ID (see Table 99 on
page 523
)
Y
10 Reserved Ulong Reserved for internal use. Y
11 Receiver
s/w Version
Ulong A value (0 - 65535) representing the receiver software
build number
Y
12 ; Char The character indicates the end of the header N
Example Log:
#RAWEPHEMA,COM1,0,35.0,SATTIME,1364,496230.000,00100000,97b7,2310;
30,1364,496800,8b0550a1892755100275e6a09382232523a9dc04ee6f794a0000090394ee,8b05
50a189aa6ff925386228f97eabf9c8047e34a70ec5a10e486e794a7a,8b0550a18a2effc2f80061c
2fffc267cd09f1d5034d3537affa28b6ff0eb*7a22f279