GPS device query

Hi all,
I am trying to log data from a Haicom 204-E GPS device onto a PC (writing a
program)
and have two questions about the data.
The output standard is in NMEA-0183 v2.20
I hooked it up to HyperTerminal and got the following output (repeating
every second):
$GPGGA,085540.034,2731.7256,S,15304.5076,E,1,04,02.1,00057.8,M,38.4,M,,*7E
$GPGSA,A,3,25,01,,,,,,20,,16,,,02.3,02.1,01.0*
02
$GPGSV,2,1,08,25,43,143,31,01,45,142,31,13,07,257,,11,32,312,*77
$GPGSV,2,2,08,20,59,211,37,23,36,234,,16,40,055,36,47,56,132,*
7E
$GPRMC,085540.034,A,2731.7256,S,15304.5076,E,000.0,195.6,211004,011.2,E*77
The manual says that it supports GGA, GLL, GSA, GSV, RMC and VTG messages
yet I don't see the GLL message there and that is the one I wish to pull the
data from (I only want lat and long).
It has enough satellites for a 3d-Fix.
My question is can I use the latitude and longitude data from the GGA or RMC
message
instead?
Additionally I noticed that there is a difference between the value there
and the value displayed
on the software that came with the unit.
In a particular recorded instance:
From hyperterminal: Longitude: 15304.4874E Latitude: 2731.7213S
format: dddmm.mmmm
ddmm.mmmm
From Boxed program: Longitude: 15308.8740 Latitude: 2738.2130
unknown format
I was thinking maybe they have a different format but I tried a few
conversions and nothing seemed to match.
4 minutes is a large distance on the ground! Any help with this would be
appreciated.
Cheers
Marc
Reply to
Marc W
Loading thread data ...
Yes you can use the GGA or RMC sentence to obtain lat/lon. Many applications do so.
2731.7213S
Maybe due to a datum shift. Is the receiver and software both set to the same datum such as WGS84/NAD83, or NAD27, or international etc.?
Reply to
cjensen

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.