What is the different calculation of TdoaV1 and TdoaV2?

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What is the different calculation of TdoaV1 and TdoaV2?

Post by EgeYlcn » Tue May 15, 2018 6:24 am

Hi everyone,

This question's answer is very important for me. Because I'm working on positioning only DWM( not use MPU ) .

When I worked on the TdoaV1, I'm create a calculation algorithm with only DWM data. This algortihm take 3 different packet from our Tag and it was starting the calculation the position of tag. This packets consist of distance difference between anchors. For instance , 1. packet has 3 value like [ 0 , 1 , 1.5172 ]. It means that '' The distance difference of anchor 0 and anchor 1 to Tag is 1.5172 '' . I had these kinds of 3 packages when i used the TdoaV1.

When I look at calculation of TdoaV2 ( https://www.bitcraze.io/2017/12/new-tdo ... to-master/ )
you use the TWR with Tdoa. But i did not understand why are you use the TWR in your TDOA algorithm.

Could you please explain to me why you are using TWR and how do you manage to calculate the position ? :))

Thank you,


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