Tiny rtk base,rover communication in computer (not pixhawk)

hi
I bought tiny rtk rover and base.
I want to make sure that the base and rover communicate through a computer u-center program without a fixhawk connection.
I set it in the tutorial style on the homepage but it is not possible to check whether it actually communicates.
I run the program from the outside, but the accuracy is very low.
I hope you can help this.

thank you.

If your rover is connected to U-Center you can check that it is correctly receiving the differential data stream. You can go to View -> Messages View -> UBX -> RXM -> RTCM. You will find the RTCM input status there.

What are you using to transmit differential data?

HI, Kevin.
I have confirmed that the two communicate according to your advice.
Thank you very much.

But there is one more problem.

And base is FIXED to the value set in the survey-in.
And the fix mode in the rover becomes 3D / DGNSS -> 3D / DGNSS / FLOAT and it becomes 3D / DGNSS / FIXED after 4 ~ 5 minutes.
However, the 3D / DGNSS / FIXED state does not last long, and after a few seconds, the 3D / DGNSS / FLOAT state does not return to the FIXED state.

  1. Is the above problem due to rover’s reception or reception?
  2. I am currently experimenting with two laptops instead of the Fix-Hawk.
  3. If I buy expensive equipment, will the above problem be solved?

I want to hear your advice.

This is a difficult question and really really depends on your environment.

  • Are you doing your tests in an open sky environment?
  • What antennas are you using?
  • Are you using a ground plane?
  • Have you updated your modules to the latest firmware?

Hi, Kevin.

Thank you for answer.

  1. Are you doing your tests in an open sky environment?
    -> Yes. [37.56123150, 126.93427683] in google map.
    I carried out experiments on the outdoor schoolyard in university.

  2. What antennas are you using?
    -> both using TW4721 (bought from drotek)

  3. Are you using a ground plane?
    -> Does this mean flat open space?
    I took it at the bottom of the school grounds.
    The base antenna was fixed on a tripod and the rover antenna was placed next to base antenna or placed on a table.

  4. Have you updated your modules to the latest firmware?
    -> yes
    (I updated u-blox M8 Flash Firmware 3.01 HPG 1.30 from u-blox homepage.)

Thank you for your help.

ps.
What are you using to transmit differential data?
->I am using 433mhz telemetry.

  1. Ok
  2. You could potentially look for TW3742 (40 dB) or TW2710 (28 dB) (yours is 26 dB)
  3. A ground plane is a piece of conductor positioned under the antenna like this :
    It helps to enhance signal. Any conductor will do the job and the recommended size is 10 cm.
  4. Perfect

Thank you for quick response.
I will try in the way you have given advice
and purchase TW3742 antenna related products.
Let’s try the experiment again.

Thank you very much.