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AWR1642 EVM Target angle estimation

TI doc describe the Wx can be calculated by the formula below, N=64 so that means the Wx resolution is about 360/64=5.625 degree, so the resolution is not good enough, is that means we still need to do some post process for example to calculate the more accurate angle by using phase-comparison monopulse method? 

  • Chianan,

     I see what the problem is with the part number you used.  You have AR1642, should be AWR1642, that's why I could not find them!  I will change the SUBJ on all four threads you posted so the correct part number is referenced.

    ~Leonard

     

  • In reply to LeonardEllis:

    Hi Leonard Thanks.
  • In reply to chianan chang:

    Hello Chianan,
    The relationship you seem to be indicating is about angular resolution. The angular accuracy mostly depends on the SNR of the signal received from the object. With high SNR you can get very good angular accuracy measurement. For improving the angular resolution, the native way is to have higher number of receive or transmit channels.

    -Vivek
  • In reply to Vivek Dham:

    Hi Vivek

    According the Wx formula, if Kmax is interger and N=64, the resolution of the Wx =360/64 =5.625 degree, and seems it is not relate to the SNR.

  • In reply to chianan chang:

    Hello Chianan,
    Thats right, the resolution fundamentally depends on N. If you want to use further some higher level algorithms to improve the resolution you can try looking at some online literature on such algorithms.
    I was referring to angular accuracy , this depends on the SNR and it typically much lower than the resolution.

    Regards,
    Dham
  • In reply to Vivek Dham:

    Hello Chianan,
    Do let us know if your query was clarified.

    Regards,
    Vivek
  • In reply to Vivek Dham:

    Yes, Thanks.

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