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MMWCAS-DSP-EVM: cascade radar adc data read and data format

xiao liyang
Prodigy 60 points
Part Number: MMWCAS-DSP-EVM

hi
Now I need to use MMWCAS-DSP-EVM and cascaded radar development board for project development. I want to get the original data file during data acquisition. Now I got the data folder as shown in the picture, but I don’t know how to parse it They, how to read them into matlab in the format of "nunber of channels x Number of frames x Chirps per franme x Number of samples per chirp" for example? How are these data internally arranged and organized?What information does each file represent? Can you guys provide some help or what material should I look at?

thanks for your help

  • 0
    Prodigy 60 points

    In chapter 3.4.1.1 of the technical manual "Imaging Radar Using Cascaded mmWave Sensor Reference Design", it is mentioned that the binary data file is based on the chirp parameters based on the data format, the number of samples per chirp, the number of chirps per frame, TX/RX Number of channels to read/parse. The data is then reformatted into a 4D matrix containing the number of samples per chirp, number of chirps per frame, number of RX channels, and number of TX channels.

    So how do I operate to get this 4D matrix?

  • 0 in reply to xiao liyang
    TI__Mastermind 20605 points

    Hi Xiao,

    The MATLAB postprocessing script has the parsing for the data captured by this. Would recommend you set a break point in the the same and see how the data is parsed. Typically, you will have the Samples of a single chirp( This can be interleaved or non interleaved format) followed by all the chirps in the frame followed by number of frames the data was captured for. Each sample will be complex 16 bit numbers. 

    Regards,

    Kaushik