Study on Matched Filtering Process Based on Long-Range Pulsed Laser Heterodyne Detection
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | Acta Optica Sinica
 |
| 出版日期 | 2018 |
| 卷号 | 38期号:1 |
| 关键词 | Heterodyne detection Heterodyning Intelligent systems Matched filters Missiles Monte Carlo methods Pulsed lasers Radar cross section Remote sensing Space stations |
| ISSN号 | 0253-2239 |
| DOI | 10.3788/aos201838.0128003 |
| 英文摘要 | 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. |
| 源URL | [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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