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AWR1642BOOST: 1642boost: false echoes

Wembanyama
Intellectual 570 points
Part Number: AWR1642BOOST

hi,

How to eliminate false echoes, as shown by red arrow in the figure.

then target indicated by red arrow.

Regards,

Wembanyama

  • 0
    TI__Mastermind 20605 points

    Hi Wembanyama,

    Thank you for your patience!

    Can you confirm the following?

    • Is your scene completely static or are there non-stationary targets in your test scene?
    • If it is static, then I would suggest you firstly remove the zero-doppler signals. (The red-arrow detections seem to be this)
    • If your scene is non-static, then what you are pointing to here might not even be a false detection but could correspond to some actual target in the scene. Could you please confirm the same?

    Regards,

    Kaushik

  • 0 in reply to Kaushik Gowda
    Intellectual 570 points

    hi,

    thanks for your reply.

    I am very sure, it is completely static in my scene, and no any stationary targets in my test scene.

    according to my picture below with my test scene, 

    Wembanyama said:

    as shown by red arrow in the figure.

    then target indicated by red arrow.

    As I understand it, when Fourier transforms are performed on discrete data, the data may map strong low-frequency components in the frequency domain. So I am not quite sure, please give me some definite answers: since we are processing the MHz ADC intermediate-frequency data in the time domain, and doing the Fourier transform on the ADC data, there will be a similar DC component (that is, the low-frequency component is often said), so it maybe cause the strong reflection phenomenon by red arrow in the picture?

    If what I say is wrong, what do you think What are the causes of strong reflections indicated by the red arrow?

    maybe I need to retest the stationary scene without triangular mount, another possible reason is:

     My battery is 8-10 cm from the radar backplane, so  I want to know What is the level of backward reflection for my radar boost?

    in sum:

    1) FFT algorithm causes the strong reflection?

    2) The radar backplane has too much electromagnetic leakage? what level is the leakage?

    give me some reply for these two items ,please.

    Regards,

    Wembanyama