电子学报2011，Vol.39Issue(9)：2135-2141,7.
海杂波下的双门限恒虚警目标检测新方法
A Novel Method for CFAR Detector with Bi-Thresholds in Sea Clutter
陈建军 1黄孟俊 1邱伟 1赵宏钟 1付强1
作者信息
- 1. 国防科技大学电子科学与工程学院ATR重点实验室,湖南长沙410073
- 折叠
摘要
Abstract
It is confirmed by the field test that the power density of sea clutter received by the coherent radar varies in the Doppler domain, while the distribution of the amplitude of the Doppler frequency component can be mathematically modeled by the Rayleigh distribution or the Weibull distribution. A novel method for the constant false alarm rate (CFAR) detector with bi-thresholds is proposed. The proposed detector is implemented with a serial structure and has the ability for both threshold estimation and the CFAR.In addition, the proposed detector can tremendously outperform the traditional column window detector with nearly the same computational complexity. The simulation results show that the proposed method can achieve a gain of 9 dB in the term of the signal-to-noise ratio (SNR) compared to the column window detector with the false alarm probability of 10-5 and the detection probability of 90%.关键词
恒虚警/相参雷达/距离-多普勒/海杂波Key words
constant false alarm rate (CFAR)/ coherent radar/ range-doppler/ sea clutter分类
信息技术与安全科学引用本文复制引用
陈建军,黄孟俊,邱伟,赵宏钟,付强..海杂波下的双门限恒虚警目标检测新方法[J].电子学报,2011,39(9):2135-2141,7.
