What is the correct configuration to make a base and a rover work with the external radios connected, since I have not been able to make them work to do a typographical survey
https://learn.sparkfun.com/tutorials/se … rtk-system and then lookup the hookup guide for your specific device (under the ‘documents’ tab on the product page) and hook up the serial radio(s) similarly
I set up my base equipment with the telemetry radio, I leave it for 20 minutes in base mode, then I turn on my rover so that it sends a signal and the corrections, but when I download the information to the computer it gives errors of 40 cm, it is supposed to when you have the base and the rover it should be the millimeter error and it doesn’t give me that.
I have looked at its firmware and the radios have different versions, I don’t know if it is due to that that the signal is not sent.
since I have also not seen a proper manual to configure the base and the rover when one configures it from the cell phone through Wi-Fi.
The note above to look up the hookup guide for your equipment is an excellent suggestion. There is also a very comprehensive “RTK Product Manual” for the SparkFun RTK Products (Facet, Express, Reference Station, etc.)
There is a bit of a learning curve, I had to go through all the SparkFun documentation a couple times while configuring my units (I have two Facets) for me to get things working really well. The SparkFun RTK equipment is designed to be very versatile and work in many different use cases, which leads to the documentation being quite extensive.
Some more information will help everyone here help you:
–Which RTK model equipment do you have? SparkFun makes a number of different models that can do RTK.
–Which radios to you have? SparkFun sells a couple different models.
–Are both your units outside with a very clear & open view of the sky?
–Are the radios communicating (check the status LEDs)?
–Regarding the 40cm error you report, how are you calculating that number and what is your reference?
–Is the Rover getting an RTK Fixed solution? (Different SparkFun models display this status differently.)
–Do you have known highly accurate coordinates for the base location and are you configuring the base with those coordinates? This is necessary to get highly accurate rover coordinates.
–If the coordinates the base is using are 40cm off, the coordinates the rover outputs will be off a similar amount.
–If you let the base survey-in, it will determine close (+/- 1m perhaps) coordinates for itself. If you get a RTK Fixed solution at the Rover with survey-in coordinates, the rover location will be known with high accuracy (+/- 1-2 cm perhaps) to the base, but not in absolutely (to the rests of the world.
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I have 2 RTK FACET GNSS RTK RECEIVER Equipment (The two equipment contain the RTK_Surveyor_Firmware_v3_6 )
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I have 2 Radios SIK TELEMETRY RADIO V3 915 Mhz 100 mw (1st has the firmware RFD SIK 2.0 on HM-TRP AND the 2nd Sik 2.2 on HM-TRP) I don’t know if they have to be the same
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both units are outside. one on the tripod and the other on the pole (I need to survey where there is no internet signal, so I bought them with the radios to send the signal)
4… the radios emit a green and a red light (both flash)
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I put marks on an open field, and surveyed with a total station and also with the rtk facet gps, and compared them to see the difference they produced and there was a difference of 40 cm or more (it is assumed that when you have the base and the rover, both connected to the radio, there must not be such a big error, it must be millimeter, that is what they told me when I bought them, where I do surveys, there is no internet)
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They told me that when I connect the radios it should give me rtk fix, and it always gave me single radios connected
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The team is supposed to give them the correct coordinates at the base and from there send them to the rover (or am I wrong, I’ll describe what I did later)
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Yes, I know that if there is a difference of 40 cm, everything moves
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I say that I am doing something wrong with regard to the base and the rover, right now I describe what I am doing to see if I am correct.
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I put the base on the tripod and I put the radio antenna on it, I turn on the equipment and put it in base mode, I leave the equipment for 1 hour to capture .ubx
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I turn on the rover unit and connect it via bluetooth and enter the swmaps program
3.and I start to capture the points
4.- then I do the comparison of the points and it gives a lot of lag
What do the displays on the Base and Rover look like? Can you show us photos?
On the rover, does the middle line (Horizontal Position Accuracy) show a bulls-eye with a double circle indicating RTK Fix?
Does it show .014 ? (That’s 0.014m)
On the base, does the top line of the display have a checkered flag (Survey-In Base mode) or a castle (Fixed Base mode)?
Does the base display "Xmitting? (That would mean it is actually trying to transmit RTCM to the Rover.)
In SWMaps, what Fix Type does it show when you connect SWMaps to the rover?
Note that if you use “Fixed Base” mode, where you give the Base its coordinates, and you enter incorrect coordinates, the Rover will never fix. I’m in the US, and sometimes I forget that my longitudes are negative. If I enter a positive longitude, the Rover will never fix.
Hello, how are you, friend, sorry for writing late, I was already able to configure my equipment and it gives me very good precision in base and rover as a whole. Just where I have doubts when using SWMAPS, it gives me precision fix, but the strange thing is that it shows me the singular mode and goes to fix and vice versa, I don’t know why it doesn’t just let me fix and that’s it, I have to configure swmaps so that I can register pure fix point.
The next question highlighted whether the equipment is capable of compensating the rover when we have the staff tilted with the equipment, when lifting a point.