Magellan's GPS Receiver 320 User Manual

55

GGA

Global Positioning System Fix Data

    1         2       3 4        5 6 7  8   9  10 11

GGA,hhmmss.ss,1111.11,a,yyyyy.yy,a,x,xx,x.x,x.x,M,x.x,

     12 13  14

     M,x.x,xxxx*hh

1

UTC of Position

2-3

Latitude - N/S

4-5

Longitude - E/W

6

GPS Quality Indicator

0 = fix not available or invalid

1 = GPS SPS Mode, Fix valid

2 = Differential GPS, SPS Mode, fix valid

3 = GPS PPS Mode, fix valid

7

Number of satellites in use (00-12, may be different

from the number in view)

8

Horizontal dilution of precision

9

Antenna altitude above/below mean sea level

10

Units of antenna altitude, meters

11

Geoidal separation - difference between the WGS-84

earth ellipsoid and mean sea level (geoid), “-” =

mean sea level below ellipsoid

12

Units of geoidal separation, meters.

13

Age of Differential GPS data - Time in seconds since

last SC104 Type 1 or 9 update, null field when DGPS

is not used

14

Differential reference station ID, 0000-1023

GLL

Geographic Position — Latitude/Longitude

    1       2 3        4 5         6

GLL,1111.11,a,yyyyy.yy,a,hhmmss.ss,A*hh

1-2

Latitude, N/S

2-3

Longitude, E/W

4

UTC of position

6

Status  A = Data valid

 V = Data not valid