Study on Matched Filtering Process Based on Long-Range Pulsed Laser Heterodyne Detection

doi:10.3788/aos201838.0128003

CIOMP OpenIR

	Study on Matched Filtering Process Based on Long-Range Pulsed Laser Heterodyne Detection
	Wu Shisong, 吴世松; Zhang Heyong, 张合勇; Wang Tingfeng, 王挺峰; Guo Jin, 郭劲; Yan Chunhui, 晏春回; Lü Tao, 吕韬
	2018
发表期刊	Acta Optica Sinica
ISSN	0253-2239
卷号	38 期号:1
摘要	Based on the long-range pulsed laser heterodyne detection system, the expression of signal and noise of the system is deduced. The matched filtering algorithm processing of the pulsed laser heterodyne detection system is given. The detailed application process of matched filtering technique in target detection of medium-range missiles and international space station is simulated. The influence of the target range, the scattering cross section area and the digital sampling rate on the detection capability is analyzed. The simulation results show that, under the digital processing capability of 100 MHz sampling rate, the Monte Carlo simulation of 500 matching filtering process is carried out. For the medium-range missile with the scattering cross section area of 5 m2and the distance of 100 km, the carrier-to-noise ratio of echo signal is 3.29 dB, the carrier-to-noise ratio of echo signal after matched filtering is 25.13 dB, the signal strength increases 152 times, the range accuracy is 27 m and the range rate accuracy is 0.17 m/s. For the international space station with the scattering cross section area of 100 m2and the distance of 500 km, the carrier-to-noise ratio of the echo signal is -6.12 dB, the carrier-to-noise ratio of the echo signal after matched filtering is 18.49 dB, the signal strength increases 289 times, the range accuracy is 117 m and the range rate accuracy is 2.1 m/s. The smaller the target range is, the larger the radar cross section area is, and the higher the digital sampling rate is, the stronger the ability of the matched filtering to extract and enhance the signal is. 2018, Chinese Lasers Press. All right reserved.
关键词	Heterodyne detection Heterodyning Intelligent systems Matched filters Missiles Monte Carlo methods Pulsed lasers Radar cross section Remote sensing Space stations
DOI	10.3788/aos201838.0128003
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60823
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Wu Shisong, 吴世松,Zhang Heyong, 张合勇,Wang Tingfeng, 王挺峰,et al. Study on Matched Filtering Process Based on Long-Range Pulsed Laser Heterodyne Detection[J]. Acta Optica Sinica,2018,38(1).
APA	Wu Shisong, 吴世松,Zhang Heyong, 张合勇,Wang Tingfeng, 王挺峰,Guo Jin, 郭劲,Yan Chunhui, 晏春回,&Lü Tao, 吕韬.(2018).Study on Matched Filtering Process Based on Long-Range Pulsed Laser Heterodyne Detection.Acta Optica Sinica,38(1).
MLA	Wu Shisong, 吴世松,et al."Study on Matched Filtering Process Based on Long-Range Pulsed Laser Heterodyne Detection".Acta Optica Sinica 38.1(2018).

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