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IWR1443: Additional points seen on non-existent objects for moving object

Part Number: IWR1443

When using the radar for object detection, points representing non-existent objects appear when an existing object is in motion relative to the radar. These points appear in a semicircle centered around the radar, spanning from the negative z axis, through the object, and up to the positive z axis all along a vertical plane. The moving object this was seen on was a walking person where the person was walking from in front of the radar to a point 4 meters from the radar in a straight line. Included is the configuration used and a few screenshots showing what the plotted data looked like.

How do I stop these other points from showing up?

 0753.profile.cfg

  • Former Member
    0 Former Member

    Hello,

    These objects can be multipath reflections or noisy signal.

    Can you try:

    A) Repeating the test in an open environment to see if the number of false points decreases?

    B) Adjust the CFAR thresholds in the real-time tuning tab until the false points decrease.

    Amanda

  • I tested again in an open space with no other objects within a 5 meter distance from the radar. The radar was placed very close to the ground.

    I tried with the CFAR threshold at 15, 25, 50, and 75. At all of these thresholds the arc of non-existent objects still appeared, although it was slightly less at 50 and 75. I am also worried running at this high of a threshold, as the radar will have to pick up objects much smaller than a person.

    Do you have any other suggestions?
  • Former Member
    0 Former Member in reply to Kevin Lannen
    Hello Kevin,

    Is the antenna oriented so that part of the field of view encompassing the ground? Strong reflections from the ground can appear as objects.

    Can you try the following:
    1. Orient away from the ground or for debug purposes place on the edge of a table.
    2. Enable static clutter removal if sensor is placed near the ground.

    Amanda