Spectra-precision ProMark 800 Reference Manual Manual do Utilizador Página 415

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403
Output Message Library
Reminder on How
to Output SNW
Messages
Use the $PASHS,RAW command with the syntax below:
$PASHS,RAW,SNW,<port_ID>,ON,<Rate>
For more details on the $PASHS,RAW command, refer to the
Set Command Library Chapter.
As an example, the command below will output SNW
messages on port A at a rate of 15 seconds:
$PASHS,RAW,SNW,A,ON,15
float 3*4
Satellite ECEF velocity X’, Y’, Z’ coordinates
(m/s)
float 3*4 Satellite ECEF acceleration X’’,Y’’,Z’’ (m/s2)
float aGf0 4
Time offset between satellite time scale and
SBAS system time scale (seconds)
float aGf1 4
Time drift between satellite time scale and
SBAS system time scale (seconds)
long tow 4
Time within week in GPS time scale when
SBAS ephemeris was received
char wn 1
Week number in GPS time scale when
SBAS ephemeris was received
char prn 1 Satellite number (33 to 51)
Unsigned
short
Checksum 2
The checksum is computed by breaking the
structure into 34 unsigned shorts, adding
them together, and taking the least signifi-
cant 16 bits of the result.
Total 7 0
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