Do I understand this correctly for a two RS3 base - RTK setup?

Goal is to have a precise RTK positioning without any internet in remote locations where I can’t access an NTRIP service.

If I purchase a second RS3 and I set them both up. Do I then connect them between each other using LORA then connect the drone to one of the bases using NTRIP or NTRIP LOCAL??

Would this even give me a more precise RTK fix over just the 1 base and drone?

How far apart should the 2 RS3’s be from each other for the best results?

For working with a drone, you’d only need 1 RS3. However, if you are planning to do GCP’s etc, you need that second one.

Also note that, unless you setup over known point, like an official monument, you will only have relative precision, not absolute accuracy.


Curious… could you use the drone (with M2?) To collect the control points? I know wouldnt be as convenient as another RS3 on a rover pole… but seems you could using proper offsets and proper plumb laser pointer set down on ground control point?

I guess could be a little awkward… but doable?

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Naaa, not a precise enough solution.
Rather just take the M2 off the drone then, or better, just buy one more M2.

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Hi @KN1,

Couldn’t say better than @wizprod. My two cents, though.

If there’s no internet, the Local NTRIP is the single option to establish an RTK link between Reach and the drone.

The less baseline, the better result you get. But it will be a short one in such conditions anyway because the base will be located relatively close to the surveying area.

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Assuming I won’t have any internet connection. Would I get a more accurate RTK connection if having 2 bases where the main one is getting corrections from the second one while the main one receiving corrections was also connected to the drone to provide RTK.

Also assuming I have an known point for the main base.

Your description sounds somewhat similar to retranslation, but it doesn’t make sense here in terms of accuracy. You’re just adding the excessive chain and thus introducing the error of determining the second base coordinates to the entire dataset. At least, I don’t see how you can benefit from this yet.

I’d place the one base over a known point and send corrections to the drone. If this point is unknown so far, PPP services like NRCan come in handy.

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