Signals received by GPS-RTK-SMA

[SlowNsteady]

Hi all,

I’m having trouble post processing logged data with the AUSPOS service, I can use the CSRS-PPP service but want to use a service that does a double difference strategy, like AUSPOS.

I believe the F9P receive (mine is ZED-F9P-01B-01) receives the C1C/A, L1C/A and C2C, L2C codes. The L2C is made up of L2CL (or L2L in rinex format) and L2CM (L2S rinex format). This receiver should obtain both of these codes however mine only receives the L2CL. See the attachments below.

In u-centre the UBX-NAV-SIG message shows the L2CM signal but only intermitantly and only ever at 0dBhz. An example is attached.

I know someone who has the same receiver on a different brand board who does get both L2CL and L2CM, I’m wondering if this is due to a limitation in the Sparkfun GPS-RTK-SMA version or whether there is a setting that can be changed to allow this.

I’m asking here because I’m not sure if this is a uBlox or Sparkfun issue.

Thanks

Josh

[TS-Chris]

Hi Josh.

We use a stock receiver from U-Blox and haven’t changed anything on it to make it specific to our board. You may need to change something in the configuration using U-Center to get the output needed by your software.

Unfortunately we don’t know what settings you need to change, you might check the settings in the working module to see what they are and duplicate them on the SparkFun board to see if that does the trick for you.