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AWR1843AOP: Max velocity and extended max velocity

Carlo
Expert 7715 points
Part Number: AWR1843AOP

Hello E2E,

What is the difference between max velocity and extended max velocity? and how to configure extended maximum velocity in ( .cfg ) and visualize it in the demo visualizer?

Regards,
Carlo

  • 0
    TI__Guru*** 141644 points

    Hi,

    We use the term "unambiguous velocity" for the velocity that is computed based on the radar frame parameters.

    Please see this training that explains how this velocity is computed

    https://training.ti.com/intro-mmwave-sensing-fmcw-radars-module-3-velocity-estimation

    As shown in this video, there is a max limit for the unambiguous velocity.

    There are different techniques to extend the unambiguous velocity.

    The mmWave SDK uses a technique to extend the velocity to 2x

    This is enabled by the command "extendedMaxVelocity"

    Please see this example:

    C:\ti\mmwave_sdk_03_05_00_04\packages\ti\demo\xwr18xx\mmw\profiles\profile_2d.cfg

    Thank you

    Cesar

  • 0 in reply to Cesar
    TI__Expert 7715 points

    Hello Cesar,

    Our customer check this profile C:\ti\mmwave_sdk_03_05_00_04\packages\ti\demo\xwr18xx\mmw\profiles\profile_2d.cfg, however the extendedmaxvelocity command is disabled
    "extendedMaxVelocity -1 0 "
    How they should consider this order? if they enable this command as follows
    extendedMaxVelocity -1 1 nothing happens.

    Regards,
    Carlo

  • 0 in reply to Carlo
    TI__Guru*** 141644 points

    Hi,

    For

    C:\ti\mmwave_sdk_03_05_00_04\packages\ti\demo\xwr18xx\mmw\profiles\profile_2d.cfg

    % Velocity Maximum  m/s                               10.59
    % Extended Maximum Velocity m/s                       21.17

    In order to observe the effect of " extendedMaxVelocity -1 1" with profile_2d.cfg configuration one would need to observe an object that has velocity > 10.59 m/s.

    The value of the velocity should be observed in the visualizer

    Thank you

    Cesar