The analysis of log-CFAR detector with digital adaptive detection threshold against the background of sea clutter

 

I. E. Chukhlomin, N. A. Fayzulin

Research Institute of Measuring Engineering, Chelyabinsk

 

The paper is received on November 10, 2014, after correction on January 30, 2015

 

Abstract. The research deals with different types of sea clutter effecting the receiver path of amplitude detector and log-CFAR detector of pulse radar. Analysis is made for the performance aerial target detection through sea clutter described by lognormal and Rayleigh law of distribution. A study is conducted for influence of time constant for logarithmic input function displacement of log-CFAR detector on detection performance.

Keywords: sea clutter, CFAR detector, Rayleigh distribution, non-Gaussian clutter, lognormal distribution.