Wave-radio iGPS-M, Руководство пользователя

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iGPS-M USER’S MANUAL
11
RMC – Recommended Minimum Specific GNSS Data
Time, date, position, course and speed data.
Format: $GPRMC,hhmmss.dd,S,xxmm.dddd,<N|S>,yyymm.dddd,<E|W>,s.s,h.h,ddmmyy,d.d,
<E|W>,M*hh<CR><LF>
Example: $GPRMC,134829.486,A,1126.6639,S,11133.3299,W,58.31,309.62,110200,,,A*14
Parameter Description Example
hhmmss.dd UTC time, h = hours, mm = minutes, ss = seconds,
dd = decimal part of seconds
13:48:29.486
S Status indicator, A = valid, V = invalid Valid
xxmm.dddd Latitude, xx = degrees, mm = minutes,
dddd = decimal part of minutes
11 deg.
<N|S> Either character N or character S,
N = North, S = South
26.6639 min.
yyymm.dddd Longitude, yyy = degrees, mm = minutes,
dddd = decimal part of minutes
111 deg.
33.3299 min.
<E|W> Either character E or character W,
E = East, W = West
West
s.s Speed, knots. 58.31 Knots
h.h Heading 309.62 deg.
ddmmyy Date, dd = date, mm = month, yy = year
11
th
, Aug. 2000
d.d Magnetic variation
<E|W> Declination. Either character E or character W,
E = East, W = West
M Mode indicator, A = autonomous, N = data not valid Autonomous
hh Check sum
14
GSA – DOP and Active Satellites
GPS receiver operating mode, satellites used in the navigation solution reported by
the GGA sentence, and DOP values.
Format: $GPGSA,a,b,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,p.p,h.h,v.v*hh<CR><LF>
Example: $GPGSA,A,3,03,15,17,18,22,23,,,,,,,4.7,3.7,2.9*37
Note:
Parameter Description Example
a Mode: M = Manual, forced to operate in 2D or 3D mode.
A = Automatic, allowed to automatically switch 2D/3D.
Automatic
b Mode: 1 = Fix not available, 2 = 2D, 3 = 3D 3D
xx ID (PRN) numbers of GPS satellites used in solution 03,15,17,18,
22,23
p.p PDOP PDOP = 4.7
h.h HDOP HDOP = 3.7
v.v VDOP VDOP = 2.9
hh Check sum 37