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IWR6843AOP: IWR6843AOP HWA CFAR Limitations

Peter Mergenthaler
Prodigy 10 points
Part Number: IWR6843AOP
Other Parts Discussed in Thread: DCA1000EVM,

I am using the IWR6843AOP in combination with the DCA1000EVM module and I am trying to finetune the CFAR configurations to optimize the pointcloud for my application. During the process of modifying the cfar configurations I found out, that some of the configurations are apparently not possible, when using the HWA and I would like to verify those Limitations.

For example I found this Thread: https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1127991/iwr6843aopevm-about-cfar-caso-and-cfar-ca/4187993?tisearch=e2e-sitesearch&keymatch=IWR6843AOP%252525252525252520HWA%252525252525252520Cfar#4187993 that says, that cyclic mode is not supported for Range Cfar.

For me it did also not work, when I was trying to use CASO, or CAGO on the velocity Cfar. Is this a limitation of the HWA? I did not find anything in the Users guide of the HWA.

Thanks for looking into it.

  • +1
    TI__Mastermind 37805 points

    Hi Peter,

    Are you using the DCA1000 to capture raw data? If so, then you should not need the HWA for CFAR, as the DCA is meant to export the entire radar cube.

    The limitations above are not inherent to the HWA, just to the software designed to run with the configuration files. I am confident you could change the software to enable these capabilities, you would just have to do it yourself.

    Best,

    Nate