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AWR1843BOOST: object output for each subframe (advanced frame config)

Florian Maier
Prodigy 30 points

Part Number: AWR1843BOOST
Other Parts Discussed in Thread: AWR1843

Hello,

Im reading the data of the AWR1843 with a python-script using the serial port. I saw there is an example for an advanced frame configuration in the doxygen. Im wondering if its possible to read the detected object for each subframe. I saw its possible to see the detected objects for each subframe in the demo visualizer but can I read them with my python script?

What Im trying to do is: I want to detect a smaller object in front of the sensor (about 20 cm) when a big object is behind it. My plan was to use subframes with diffrent CFAR-FOV's. I want to use a subframe with a CFAR range just behind the small object and another subframe to observe a range of 5 m. Is this even the right idea to solve my problem?

Thanks for your help.

  • 0
    TI__Guru**** 153394 points

    Hi,

    The AWR1843 MRR demo provided in the automotive toolbox in the TI resource explorer (lab0007_medium_range_radar) uses advanced frame configuration. The detected object list is provided for each subframe. So you should be able to read it with a script. This is exactly what the matlab gui for the MRR demo is doing.

    In order to detect the small object you can also try a chrip configuration with a range of .5m for the larger object you should try a chirp configuration with a range of 7m.

    Thank you

    Cesar

  • 0 in reply to Cesar
    Prodigy 30 points

    Hi,

    thanks for your answer. If I use this lab and want to use my code to start it, how do I know how the config-file looks like, that I send to the sensor? Is it the same like the "profile_advanced_subframe.cfg" in the doxygen (with two subframes instaed of four)? How can I use diffrent CFAR-FOV's then?

    I dont understand how the 0.5m and the 7m chirp would look diffrent. You mean using such an high slope for the near range, that because of my too slow samplig rate I cannot detect the far object anymore?

    Thank you

  • 0 in reply to Florian Maier
    TI__Guru**** 153394 points

    Hi,

    I think that you should perform some testing with standard frame configuration

    Test first the detection of the object at 20cm with your first CFAR. Second test the detection of the larger object behind with the second CFAR configuration.

    If you have satisfying results for both tests then you can combine the two in a multi mode demo where you would have the two different CFAR configurations.

    Thank you

    Cesar