Table 38: Example N Sentence; Table 39: Geographic Position Sentence - NorthStar 8700 Technical Reference Manual

Section 10 - NMEA protocols
PAGE 56

Table 38: Example N sentence

Data field Contents
$GPGGA,012338.61,5619.2837,N,17235.8964,E,1,05,02.3,
-00034.2,M,,M,,*66<CR><LF>
UTC 01:23:38.61
Latitude 56 19.2837' North
Longitude 172 35.8964' East
Quality GPS fix
Satellites 5
used
HDOP 2.3
Altitude -34.2 m below sea level
Geographic position—latitude/longitude ($GPGLL)
This message provides latitude and longitude of present position, time of
position, and status.

Table 39: Geographic position sentence

Data field Contents
$GPGLL,llll.llll,a,yyyyy.yyyy,a,hhmmss.ss,A*hh<CR><L
F>
Latitude with respect to WGS-84. Two digits of
llll.llll
degrees and minutes; four digits of decimal fraction
of minutes
N/S (North or South)
a
Longitude with respect to WGS-84. Three digits of
yyyyy.yyy
y
degrees; two digits of minutes; four digits of decimal
fractions of minutes
E/W (East or West)
a
UTC of position
hhmmss.ss
Status: A = valid; V = data invalid
A
GPS DOP and active satellites ($GPGSA)
This message provides operating mode, satellites used for navigation, and
DOP values from the GPS sensor.
05/01/97 REV H