Seatex DPS 132, Руководство по установке

Страница: 39 / 108

Seatex DPS 132 Installation Manual, rev. 0 Installation
27
GGA Message
The GGA message contains time, position and GPS data. The message is as specified in
NMEA 0183 version 2.2. The message structure is as follows:
$GPGGA,hhmmss.ss,ddmm.mmmmmm,s,dddmm.mmmmmm,s,q,nn,h.h,a.a,M,g.g,M,a.a,
rrrr*cc
Table 9 describes the GGA message fields.
Field Description
hhmmss.ss UTC of position (hours, minutes, seconds).
ddmm.mmmmmm Latitude (degrees, minutes and fractions of minutes).
s
Latitude sector, N - North or S - South.
dddmm.mmmmmm Longitude (degrees, minutes and fractions of minutes).
s
Longitude sector, E - East or W - West.
q GPS Quality indicator: 0 = Fix not valid, 1 = GPS fix, 2 = DGPS fix.
nn Number of satellites in use, 00 - 12.
h.h HDOP - horizontal dilution of precision 00.0 to 99.9.
a.a Altitude, reference: mean-sea-level (geoid).
M Altitude unit, M = meters.
g.g Geoidal separation: the difference between the WGS-84 ellipsoid and
mean-sea-level (geoid).
M Geoidal separation unit, M = meters.
a.a Age of differential corrections, in seconds. 0 when DGPS not used.
rrrr Differential reference station ID, 0000-1023.
*cc Checksum.
Table 9 GGA message fields
GGA_1.5 Message
The GGA_1.5 message contains time, position and fix related GPS data. The message is as
specified in NMEA 0183 version 1.5. The message structure is as follows:
$GPGGA,hhmmss.ss,ddmm.mmmmmm,s,dddmm.mmmmmm,s,q,n,hhh,uaa,M,uggg,M*cc
Table 10 describes the GGA_1.5 message fields.
Field Description
hhmmss.ss UTC of position (hours, minutes, seconds).
ddmm.mmmmmm Latitude (degrees, minutes and fractions of minutes).
s
Latitude sector, N - North or S - South.
dddmm.mmmmmm Longitude (degrees, minutes and fractions of minutes).
FSP ref.: A11211400XRBRA0