EMAC PCM-3292, Руководство пользователя

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5.5.9 LOGSTOP – Stop Logging
This command can be used to stop logging while navigating without stopping navigation at
the same time.
When navigation is started next time, logging is started in a normal fashion as
defined by the logging start mode.
6.0 NMEA Message
This chapter describes the supported NMEA output messages.
6.1 GGA – Global Positioning System Fix Data
Time, position and fix related data for a GPS receiver .
$GPGGA,hhmmss.dd,xxmm.dddd,<N|S>,yyymm.dddd,<E|W>,v,ss,d.d,h.h,M,g.g,M,a.a,xxxx*hh<CR><LF>
hhmmss.dd UTC time
hh = hours
mm = minutes
ss = seconds
dd = decimal part of seconds
xxmm.dddd Latitude
xx = degrees
mm = minutes
dddd = decimal part of minutes
<N|S> Either character N or character S, ( N = North, S =
South )
yyymm.dddd
Longitude
yyy = degrees
mm = minutes
dddd = decimal part of minutes
<E|W> Either character E or character W, E = East, W = West
V Fix valid indicator
0=Fix not valid
1=Fix valid
Ss Number of satellites used in position fix, 00-12. Fixed length
d.d HDOP – Horizontal Dilution Of Precision
h.h Altitude (mean-sea-level, geoid)
M letter M
g.g Difference between the WGS-84 reference ellipsoid surface and the
mean-sea-level altitude.
M letter M
a.a NULL (missing)
xxxx NULL (missing).