WEBENCH® Tools/IWR1443BOOST: To solve ghost detected point problem.

Hello,

In the picture of your EVM setup (hardware), If we have a height above the floor of 70cm, and you imagine shining a flashlight with a cutout that matches the azimuth and elevation Field of View,   the radar reflection is the difference frequency, where the receiver signal level is above a threshold of a detected event.

a) if you are 70cm above the floor, there is a ground reflection that can return.  If there is any mechanical mounting like the baseplate in front of the radar antenna EVM, it can be a reflected object.

    - remount the radar using the 4 screws from a mounting plate behind the radar, and make sure the baseplate is behind th EVM,

    - this can also happen if there is some foreign material on the EVM antenna.   Carefully using an filtered air spray, and spray the antenna area

    - changing the elevation angle of the EVM antenna relative to the floor, can also help to remove the stand or ground relflection. 

     - sometimes thinck corregated cardboard can act as a radar deflector laid at the base of the EVM floor mount.

b) in your picture of the receiver returned signal (Range Profile for Zero Doppler)

      after you have remounted the radar, and cleaned the antenna

       there is a strong signal at DC, this may require saving the Visualizer config to PC, using the mmwave SDK User Guide, adjust the  calibDcRangeSig API

       values, to minimize the DC (0 meter) amplitude

        as the DC level is reduced, using the same graph, the detection (orange dots), should eventually be removed near 0 meters.

        There is also a visualizer SNR for Range, changing this db value can exclude or include more or less targets,

Regards,

Joe QUintal