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AWRL6432: frameCfg numOfChirpsAccum parameter

Part Number: AWRL6432

Hi

   We would like to use numOfChirpsAccum to enhance the Radar SNR, we find it really can enhance the SNR but we do not know how it works.

 The document describe "This field indicates the number of chirps to be accumulated before sending the
ADC data out in DFE. This feature can be used to increase the SNR without increasing the number of
chirps to process in the DSP/HW accelerator. When this mode is enabled, the front-end device will send
more chirps than in the processing layer (since they are accumulated before filling the ADC buffer)"

But we would like to know how "the front-end device will send more chirps than in the processing layer " , than we can know what is the side effect will have except the power consumption 

  • Hi,

    The feature means that the chirps are averaged before processing.

    For example, let's assume that we configure 64 chirps in the frame and we accumulate 4 chirps.

    The chirps that will be processed will be 64/4=16 chirps. However each chirp will be the average of 4 physical chirps

    thank you

    Cesar