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IWR1843: I want to implement long-distance ranging (10m~100m) with the IWR1843 and achieve centimeter-level accuracy.

Henrry
Prodigy 60 points
Part Number: IWR1843

Tool/software:

Hi，

I want to implement long-distance ranging (10m~100m) with the IWR1843 and achieve centimeter-level accuracy, prioritizing precision.

Q1:

Can I achieve this with the MRR code? I have also looked into the level_sensing demo. Can Zoom-FFT solve this problem?

Q2:

If I use the level_sensing demo, can I change the antenna configuration to three transmit and four receive (3T4R)?If so, what is the maximum measurement distance and accuracy that can be achieved?The current version of the level sensing demo is 1843. I tried modifying the CLI command to channelCfg 15 7 0 for the three transmit and four receive mode, but when connecting to the GUI, nothing was displayed. 

I need technical support from TI.

Regards.

Henrry

  • 0
    TI__Mastermind 19530 points

    Hello.

    We are looking into this question and will provide a response by the end of the day tomorrow.  Thank you for your patience.

    Sincerely,

    Santosh

  • 0 in reply to Santosh Krishnan
    TI__Genius 11750 points

    Hi

    Q1. It is possible to get millimeter level accuracy with the current level sensing demo. The demo will work till 10m. But for higher range till 100m, you will have to use an optical lens. Optical lens with the same demo will work

    Q2. It is not possible to make the demo work with multiple Tx/Rx as this usecase is 1Tx/1Rx. Zoomfft is computed on the data from 1RX, as the demo is intended to compute millimeter level accurate range and angular resolution is not the focus of this demo. If the angular resolution is required then you may want to add zoomfft to the out of box demo

    Regards