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IWRL6432BOOST: xWRLx432 True Ground Speed demo over water

Martin Rishovd
Prodigy 10 points
Part Number: IWRL6432BOOST
Other Parts Discussed in Thread: IWRL6432

Tool/software:

Hello,

we would like to know if its possible to use the radar to detect speed over water mounted on a boat?

Have tried but the speed is jumping all over and the number of points are very low. Is there an option to increase the power output if the radar signals?

  • 0
    TI__Mastermind 19680 points

    Hello.

    How is the radar set up in this scenario?  Is it mounted on the boat and facing the water?  And is the boat moving as well?  Theoretically it can work with water, but the CFAR thresholds may have to be tuned differently for different surfaces as this demo and configs were originally tested for pavement.

    Sincerely,

    Santosh

  • 0 in reply to Santosh Krishnan
    Prodigy 10 points

    Hello Santos,

    the radar is mounted on the boat at 45 degrees facing water and boat is moving.

    Should we continue to use True ground speed demo and change the .cfg file?

    Is the demo board we have the right one or is there a better option for evaluation

  • 0 in reply to Martin Rishovd
    TI__Mastermind 19680 points

    Hello Martin.

    Which configuration are you using?  In addition, those configurations are only looking at points within a 5 meter range.  If the boat is higher off the ground and the water is not within a 5m range the # of points may be lower than expected.  The True Ground Speed demo should be fine for this application, but you may need to make modifications to the existing configurations to account for your environment.

    Sincerely,

    Santosh

  • 0 in reply to Santosh Krishnan
    Prodigy 10 points

    Hello Santosh,

    we have tried all configurations available in folder \chirp_configs\IWRL6432.

    Mounted on different heights above water from 1.5meter to 20cm.

    Do you have any tips on what to change in the configuration?

  • 0 in reply to Martin Rishovd
    TI__Mastermind 19680 points

    Hello.

    It depends on what performance are you seeing.  If the number of points are very low, you can try increasing the # of chirps or reducing the cfar threshold, although it is very low already so it will just increase the amount of noise you see.  As I stated before the configurations were originally tested on solid ground so it is much more stationary than water, especially the water that is close to the boat.  It may be worthwhile to look at the water that is farther out as it is more still than the water close to the boat.

    Sincerely,

    Santosh