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Original question:

AWR1843BOOST: Lab0008 Automated Parking: sometimes two clusters appears for one real object in different regions of the elevation...

AWR1843BOOST: Lab0008 Automated Parking test case

Mostafa Besar
Intellectual 470 points
Part Number: AWR1843BOOST

Hello,

I have tested Automated Parking project in the office.

https://drive.google.com/file/d/1im_cmZM2wepIJxErdTJjLSRFuV1zziW_/view?usp=sharing

I provided a video, shows 1 chair and 1 fan on front of radar, I expect to see two detected objects for the two objects.

The video shows a four cases, each case is radar view followed by it's Matlab gui representation.

The issue appears in the third case from minute 0:38 to 0:55 the radar don't detects the fan but only a chair and the left wall.

My goal in automated parking is to detects multiple objects in static environment, I have tested tuning CFAR Range threshold, but I am decreasing it slightly to avoid getting fake detected objects in the Matlab gui within 1 meter.

Can RCS tuning can be useful in this case?

Thanks,

Mostafa

  • 0
    TI__Guru*** 138269 points

    Hi,

    Our support team can't open this link.

    Static detection is usually the most challenging detection use case and there are several things to take into consideration

    • is there sufficient SNR to detect the objects when they are alone? First you should test with each object alone and make sure it can be detected when it is alone in the scene.

    • are the objects in the same range bin? - first you should test with objects which are not in the same range bin. The Parking Demo will not detect two objects in the same range bin. It only supports detecting one object per range bin

    • what is the respective RCS of the objects? If there is an object with large RCS next to an object with small RCS, the large RCS will cover the small RCS and small RCS object may not be detected.

    Thank you

    Cesar

  • 0 in reply to Cesar
    Intellectual 470 points

    Hello,

    What's the meaning of "same range bin"? and how to observe range bin value of the objects?

    Thanks,

    Mostafa

  • +1 in reply to Mostafa Besar
    TI__Guru*** 138269 points

    "same range bin" means same distance.

    Usually if you have 2 objects in the scene I would do the following

    1) Test each object separately. Check with mmWave SDK demo OOB demo Zero Doppler Profile to make sure there is a strong peak

    2) Place the two objects at different distances and check in the Zero Doppler Profile that you can still see distinct peaks.

    3) Modify the distance to place the two objects at same distance.

    Thank you

    Cesar

  • 0 in reply to Cesar
    Intellectual 470 points

    Hello Cesar,

    How Front Mount Occupancy detects two objects in the same range bin?

    Is it about chirp parameters?

    Thanks,

    Mostafa

  • +1 in reply to Mostafa Besar
    TI__Guru*** 138269 points

    This feature is part of the algorithm implementation.

    For example, the ODS demo also supports this feature.

    mmwave_automotive_toolbox_3_3_0\labs\lab0014_obstacle_detection_aop\src\dss

    Please search in the src code for "MMWDEMO_AZIMUTH_TWO_PEAK_DETECTION_ENABLE"

    Thank you

    Cesar