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The following section introduces commands for providing the CT5510 receiver with
additional data that will be helpful when starting navigation and during navigation.
INITAID – Initial position and time aiding
Gives the CT5510 module the current position and time information for
aiding the navigation startup.
If the position isn’t known, the initial time may also be given alone by
omitting the position parameters, i.e. using the command with only the
first two parameters. The altitude information is not critical and can be
set to zero (i.e. mean sea level) if not known.
NOTE: Even after INITAID is issued, the CT5510 module continues to
report the navigation data of the previous actual navigation fix until a
new fix is acquired.
$PFST,INITAID,<time>,<date>,<lat>,<N/S>,<long>,<E/W>,<altitude>
<time>
UTC time in “hhmmss.dd” format, hh = hours (2 digits),
mm = minutes (2 digits), ss.dd = seconds with two
decimals (2+2 digits).
<date>
UTC date in “ddmmyy” format, dd = day (2 digits), mm =
month (2 digits), yy = year (2 digits).
<lat>
Latitude in degrees and minutes in “xxmm.dddd” format,
xx = degrees (1-2 digits), mm.dddd = minutes with four
decimals (2+4 digits).
<N/S>
Either a character N or S (N = north, S = south).
<long>
Longitude in degrees and minutes in “yyymm.dddd”
format, yyy = degrees (1-3 digits), mm.dddd = minutes
with four decimals (2+4 digits).
<E/W>
Either a character E or W (E = east, W = west).
<altitude>
Altitude from the sea level in meters (1-5 digits).
Examples:
$PFST,INITAID,131500.78,100102,6016.3075,N,2458.3817,E,40<CR><LF>
Sets the initial position and time as follows:
Содержание PCM-3292
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