1. 21 Jul, 2015 39 commits
  2. 11 Jul, 2015 1 commit
    • Zefir Kurtisi's avatar
      ath9k: DFS - add pulse chirp detection for FCC · 8fc2b61a
      Zefir Kurtisi authored
      FCC long pulse radar (type 5) requires pulses to be
      checked for chirping. This patch implements chirp
      detection based on the FFT data provided for long
      pulses.
      
      A chirp is detected when a set of criteria defined
      by FCC pulse characteristics is met, including
      * have at least 4 FFT samples
      * max_bin index moves equidistantly between samples
      * the gradient is within defined range
      
      The chirp detection has been tested with reference
      radar generating devices and proved to work reliably.
      Signed-off-by: default avatarZefir Kurtisi <zefir.kurtisi@neratec.com>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      8fc2b61a