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AWR1642BOOST: CFAR Implementation

Samuel Miller99
Expert 1005 points

Part Number: AWR1642BOOST
Other Parts Discussed in Thread: AWR1642

After carefully studying the C implementation of the signal processing chain executed on the AWR1642, we noticed that after range and angle FFT, the signal is transformed to log2 domain for CFAR detection. This is somewhat unexpected and different to a conventional CFAR implementation (see e.g., Richards, 2005: Fundamentals of Radar Signal Processing, Chapter 7, Eq. 7.12). In this equation, Mark Richards does not have xi in log domain, but you're implementation does.

Could you please provide any theoretical justification for performing CFAR detection in log2 domain?

  • 0
    TI__Expert 5235 points

    See Richards second edition of same book (2014) chapter 6 detection fundamentals, section 6.5.5 Extensions to Cell-Averaging CFAR and locate log CFAR on page 352-353 which mentions what it is and what are the pros and cons of log CFAR.