Target detection with randomized thresholds for lidar applications

被引:19
|
作者
Johnson, Steven E. [1 ]
机构
[1] OGSyst, Chantilly, VA 20151 USA
关键词
AVALANCHE PHOTODIODES; DETECTION STATISTICS; LASER RADARS; MODE; LADAR; PROBABILITIES; PERFORMANCE; SINGLE;
D O I
10.1364/AO.51.004139
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Light detection and ranging (lidar) systems use binary hypothesis tests to detect the presence of a target in a range interval. For systems that count photon detections, hypothesis test thresholds are normally set so that a target detection is declared if the number of detections exceeds a particular number. When this method is employed, the false alarm probability can not be selected arbitrarily. In this paper, a hypothesis test that uses randomized thresholds is described. This randomized method of thresholding allows lidar operation at any false alarm probability. When there is a maximum allowable false alarm probability, the hypothesis test that uses randomized thresholds generally produces higher target detection probabilities than the conventional (nonrandom) hypothesis test. (C) 2012 Optical Society of America
引用
收藏
页码:4139 / 4150
页数:12
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