Help to configure Etek eb-85a gps

GPS/GNSS Development Boards
1

Hello,

I have a eb-85a gps that i’m using with an arduino mega.

I’d like to use it to log the trajectory of a prototype vehicle which max speed is 30km/h

i’ve seen on this document that i can configure my gps : http://www.sparkfun.com/datasheets/GPS/ … Manual.pdf

I tried to send the following commands (and it seems to work) :

  Serial1.println("$PMTK103*30rn");//cold start
          Serial1.println("$PMTK301,2*2Drn");//set dgps source type to waas
          Serial1.println("$PMTK501,2*28rn");//set dgps data type to waas
          Serial1.println("$PMTK313,1*2Ern");//turn on sbas
          Serial1.println("$PMTK314,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0*29rn");//gpgga only

But i dont know exactly what is the best configuration that i have to use to improve position accuracy.

Can someone help me to find the best configuration ?

  • What is the difference between Waas and rtcm ?

  • I may be wrong but i have seen that waas is only for north america, is that wright ?

  • What is the difference between “PMTK_API_SET_DGPS_MODE” and “PMTK_DT_DGPS_MODE” ?

Thanks