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AWR1843AOPEVM: Forum capteurs

sana ibidhi
Prodigy 40 points
Part Number: AWR1843AOPEVM

I'm actually working on a new project. I use the AWR1843AOPEVM card. I am setting up the radar on LRR, with a range of 150m and a speed of 150klm/h.

In fact my question regarding the extended max velocity command how can I use it to reach a speed of 2*Vmax?

how i can visualize extended max velocity in mmwave visualizer demo?

thank you
  • 0
    TI__Genius 15046 points

    Hi Sana,

    There are a few methods of Vmax extension. First, I want to address a limitation of the TDM modulation scheme. If Nc chirps are divided across Ntx antennae in time, then the number of doppler chirps that can be used for doppler FFT reduce by a factor of Ntx. So, the maximum velocity that can be detected with a particular chirp/frame configuration decreases by a factor of Ntx.

    The  Vmax extension in the out of box demo tries to address this. it has a heuristic that allows it to identify velocities as if Ntx was set to 1. You can look at the SDK user guide for details of this configuration and how to use it in a .cfg file, which gets sent over UART to the device.

    Regards,

    Aayush