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IWR6843: Processing certain number of chirps out of all chirps fired.

Girish Veerendra Medisetty
Prodigy 230 points
Part Number: IWR6843

For our project, we have to fire 512 chirps,64 ADC samples for each chirp, and 8 virtual antennas. we are using the HW accelerator for all radar processing. Due to memory constraints for L3 memory, we have to process a certain number of chirps out of 512 chirps(for example, we have to process the first 2 chirps out of 8 chirps). How could we achieve this?

Thanks in advance.

  • 0
    TI__Mastermind 30405 points

    Hi Girish,

    Could you please provide some more context on your intention behind using more chirps than what could be processed within the given MIPS and memory constraints?

    Is this to increase the SNR and/or velocity resolution? You can increase velocity resolution by increasing the chirp idle time which will effectively increase the active frame time and hence velocity resolution. Off course there will be a trade-off in maximum velocity due to increased chirp idle time, but if the resulting max velocity still meets your use case requirements, this could be one way to get more velocity resolution without increasing the number of chirps.

    Thanks

    -Nitin 

  • 0 in reply to Nitin Sakhuja
    TI__Mastermind 30405 points

    We will close this thread since we have not heard back from you for more than 3 weeks. Please feel free to create a new thread if you still need support on this topic.

    Thanks

    -Nitin