CCS/AWR1843BOOST: The function disambiguateVel disambiguates velocity using chinese remainder theorem

Rata Zhang

Part Number: AWR1843BOOST

Tool/software: Code Composer Studio

Hi,

The function disambiguateVel disambiguates velocity using chinese remainder theorem in the MRR demo.I have studied this function,it just realize the function based on the following formula:

Vreal=Nf*2Vf_max+Vfast=Ns*2Vs_max+Vslow, Vreal is doppler velocity.

Can anyone tell me which point uses the chinese remainder theorem?

BR,

Rata

over 4 years ago

0 Raghunandan Kamath over 4 years ago

TI__Mastermind 22155 points

Rata,

Will let our Algo expert reply to this thread.

-Raghu

0 Anil Mani over 4 years ago

TI__Expert 4720 points

Hi Rata,

Your interpretation is correct. The chinese remainder theorem is essentially the equation that you've written, which can be rewritten as

Vreal ≡ Vslow (mod 2Vs_max) ≡ Vfast (mod 2Vf_max)

We then solve for Vreal (using the equation).

Regards

Anil

0 Rata Zhang over 4 years ago in reply to Anil Mani

Expert 2670 points

Hi Anil，

Thanks for your reply, I got this point. By the way, I have another question,for the profile and chirp configuration, the period of the fast chirp is 65us, the slow chirp is 78us, how much max velocity do the two chirp periods achieve?

Regards,

Rata

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CCS/AWR1843BOOST: The function disambiguateVel disambiguates velocity using chinese remainder theorem