激光回波的目标检测算法

详细信息

Target detection algorithm of laser echo

Department of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China

摘要: 目标检测的阈值法经常用于检测目标的回波信号。它的性能取决于信噪比,当信噪比大于6.7时,能够检测出目标。为了提高信噪比,经常采用匹配滤波器。如果系统是窄带系统,噪声为色噪声,无法使用匹配滤波器,不能提高信噪比。激光回波信号的几何特征不同于噪声。提出了一种利用这种几何特征检测目标的算法。当信噪比大于2时,该算法能够检测出目标。该算法已经实际应用。
- 分形维 /
- 分形尺度 /
- 窄带系统 /
- 信噪比
Abstract: The threshold algorithm of the target detection is often used to detect target echo signals.Its performance is based on signals-noise ratio.When signals-noise ratio is great than 6.7,the target can be detected.In order to increase the signals-noise ratio,matching filter is often used.If the system is narrow band system,the noise is color noise and matching filter cannot be used.Therefore,the signals-noise ratio cannot be increased.However,the geometrical characteristic of the laser echo signal is different with the noise.This paper advises the algorithm that detects the target by the geometrical characteristic.When signals-noise ratio is great than 2,this algorithm can detect target.This algorithm has been used in practice.
- fractal dimension /
- fractal scale /
- narrow system /
- signals-noise ratio

[1]	HAUG K,PRITSCHOW G.ICASSP,1998,5:4097~4100.
[1]	NYGARDS J,WERNERSSON A.IEEE International Conferences on Publish,1998,2:1053~1059.
[2]	TRICOT C.Curves and fractal dimension.New York:Springer Verlag,1993.110~125.
[3]	FISHER Y.Fractal image compression theory and application.New York:Springer Verlag,1994.82~91.
[4]	WEN Zh Y.M athematical foundations of fractal geometry. Shanghai:Shanghai Scientific and Technological Education Publish House,2000.68~91.
[5]	张济忠.分形.北京:清华大学出版社,1995.138~140.