[ntp:questions] GPS

David J Taylor david-taylor at blueyonder.co.uk.invalid
Mon Oct 4 16:49:40 UTC 2010


> Hello,i'm from Viet Nam
> Now i'm using GPS et333
> do u can explain for me the meaning (in GPGGA):
> - position fix indicator
> - hdop
> -checksum
> -how to know the acurate of GPS's signal

Please see:

  http://aprs.gids.nl/nmea/#gga

  http://en.wikipedia.org/wiki/Dilution_of_precision_%28GPS%29

David   




More information about the questions mailing list