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tomojitakasu / RTKLIB

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str2str pass rover coordinates to base station #451

Closed Kmaltan closed 5 years ago

Kmaltan commented 5 years ago

Hello everyone. My rover F9P simpleRTK2B can get rtk in rtcm3 format, and use base station with VRS and needs to get rover coordinates. With: str2str -in ntrip://USER:PASSWD@IP_ADRESS:PORT/MOUNTPOINT -p LAT LOG ALT -n 1 -out serial://ttyS0:57600:8:n:1:off on a Rasspberry I get RTCM for the Rover. How could I pass current rover coordinates to base station ? str2str -in ntrip://USER:PASSWD@IP_ADRESS:PORT/MOUNTPOINT -b -n 1 -out serial://ttyS0:57600:8:n:1:off This command don't work. Positions output from Rover to Raspberry serial: $GPGGA,121023.04,5034.4267670,N,01025.2441644,E,1,00,1.0,152.796,M,47.204,M,0.0,48 also i try $GNGGA,121023.04,5034.4267670,N,01025.2441644,E,1,00,1.0,152.796,M,47.204,M,0.0,48 at the serial Port

I try RTKLIB2.4.3 B31 and RTKLIB2.4.3 B28.

DavidKelleySCSC commented 5 years ago

Well first you should probably run four plus hours into OPUS (or something similar) to get a position you can believe and then confirm the data is in the same frame of reference you expect the rovers to be using. You said VRS here but I presume you are trying to create a base station, not to use one. [If you are in fact trying to send NMEA to the Caster to slectd the right base, your Client software wil do that, sending the data you showed below]

As you have deduced, if the base does not provide a message (MT1005/1006) with its precise location , you must setup strstv to do it for you. Are the three values above filled in with the data when you use the command line? (in DD.dddd format). If you can run the GUI, you can also enter it here:

setbaseonrtklibstrsvr

Also, I have noticed in our shop we are now seeing a number of F9P devices showing up on the RTK2go open caster and oddly (to me at least) many of these send both RTCM and uBlox message types in the same data stream. The typical Rover device, expecting RTCM3, cannot deal with that. I do not know if RTKLIB can deal with it (perhaps others know, if so please reply), I have not had a chance to test that. [I presume uBlox can, but the information is redundant and wasteful]

Kmaltan commented 5 years ago

I not trying to create a base station. I want use a Virtuelle Referenzstation (VRS). Sending a fixed position runs. But str2str not send the rover position to the VRS

DavidKelleySCSC commented 5 years ago

Sorry for my confusion. Is there some reason you cannot set this up with RTKNavi and have it relay the returned $GGA sentences from the F9P to the VRS base? [YOU can then send that stream to Stream server if there is a need.

tomojitakasu commented 5 years ago

The -n option of str2str accepts the NMEA GGA cycle not in sec but in ms. (However, less than 1000 ms except for 0 ms or less is recognized as 1000 ms.)

The -b option, which is to relay back messages from the output stream to the input stream, should be followed by the number of the output stream, typically like "-b 1". In this case, you don't need -n option.

Note that the -b option is only supported by 2.4.3 b. It is not yet available in 2.4.2 at this moment.

Kmaltan commented 5 years ago

Now the F9P run with Pi Zero and LTE Surfstick for RTK. Many thanks.