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IWR1642: Radar performance with Rain

Part Number: IWR1642

Hi Champs,

             From below link information the radar performance is about 1~2db loss with 10 meter range, how about the loss on about 80 meter or longer?

    http://dev.ti.com/tirex/#/?link=Software%2FmmWave%20Training%2FExperiments%2FResponse%20of%20Radar%20to%20Rain 

           Thanks!

                                 Jane

  • Hello Jane,

    We do not have test data from 80 meters.   We are consulting with our system engineering team, and doing an internet search.

    We will update you when we have more information.

    Regards,

    Joe Quintal

  • Hello Jane
    The W band radar 60-100Ghz, have some papers, along with automotive radar rain. ncbi.nlm.nih.gov sensors-16-00751-f003, tuprints.ulb.tu-darmstadt.de 765/1/phd thesis (using the second reference)
    Figure 5.5 average rain backscattering, rainfall average 25mm/hr (1") -12db/m, whereas for higher rain rate, where the droplots are not spherical its higher100mm/hr -7db/m.

    Your customer will have to review the paper. I see this as 1db attenuation for 12meters (light), 1db attenuation fir 7 meters (heavier rain),
    I have ordered a text book, I will post the results when I get it.
    Regards,
    Joe Quintal
  • Hello Jane,
    www.mike-willis.com/.../PF10.htm
    depends on rain intensity, and shape of water droplets as an example
    see yellow graph in article, and equations.
    1km, 50mm/hr, 18db
    160m (round trip distance), 50mm/hr, 2.9db

    In the experiments, we used 125mm/hr
    1km, 125mm/hr, 36db
    20, (round trip distance), 125mm/hr, .7db
    10meters to target.

    Regards,
    Joe Quintal