Trc-based high-precision spot position detection in inter-satellite laser communication
文献类型：期刊论文
| 作者 | Li, Qing1,2,3,4; Guo, Hongyang1,2,4; Xu, Shaoxiong1,2,4; Xu, Yangjie1,2,4; Wang, Qiang1,2,4; He, Dong1,2,4; Peng, Zhenming3; Huang, Yongmei1,2,4 |
| 刊名 | Sensors
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 20期号:19页码:1-14 |
| ISSN号 | 1424-8220 |
| 关键词 | inter-satellite laser communication system weak light-spot position detection four-quadrant detector time reversal convolution |
| DOI | 10.3390/s20195649 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Inter-satellite laser communication (Is-OWC) is one of the main space optical communication technologies currently studied in various countries. In recent years, a kind of Is-OWC communication terminal without independent beacon light has appeared. Such terminals do not have a separate beacon laser with a large divergence angle, but use a narrower communication beam to complete space capture and tracking. Therefore, the energy of the light beam divided by the acquisition, tracking, and aiming (ATP) system is greatly reduced. How to perform high-precision spot position detection under extremely low signal-to-noise ratio (SNR) is a problem that must be faced. Aiming to resolve this problem, this article proposes to use a cosine signal to modulate the intensity of the signal light, so as to convert the problem of detecting a weak light signal into the problem of detecting a line spectrum signal. The authors used the time reversal convolution (TRC) algorithm with a window function to suppress noise and enhance the spectrum line, so as to accurately detect the amplitudes of the weak photocurrents. Finally, by calculating the ratio of the photocurrent amplitude values, the precise spot position is obtained. In the experiment, when the output SNR of the four-quadrant detector (QD) is as low as −17.86 dB, the proposed method can still detect the spot position and the absolute error is limited within 0.0238 mrad. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. |
| 出版地 | BASEL |
| WOS关键词 | SENSITIVE DETECTOR |
| WOS研究方向 | Chemistry ; Engineering ; Instruments & Instrumentation |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000586633800001 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/10145]  |
| 专题 | 光电技术研究所_光电工程总体研究室（一室） |
| 作者单位 | 1.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu; 610209, China; 2.Institute of Optics and Electronics, Chinese Academy of Sciences, No.1 Guangdian Road, Chengdu; 610209, China; 3.School of Information and Communication Engineering, University of Electronic Science and Technology of China, No.2006 Xiyuan Ave, West Hi-Tech Zone, Chengdu; 611731, China; 4.University of Chinese Academy of Sciences, Beijing; 100049, China |
| 推荐引用方式 GB/T 7714 | Li, Qing,Guo, Hongyang,Xu, Shaoxiong,et al. Trc-based high-precision spot position detection in inter-satellite laser communication[J]. Sensors,2020,20(19):1-14. |
| APA | Li, Qing.,Guo, Hongyang.,Xu, Shaoxiong.,Xu, Yangjie.,Wang, Qiang.,...&Huang, Yongmei.(2020).Trc-based high-precision spot position detection in inter-satellite laser communication.Sensors,20(19),1-14. |
| MLA | Li, Qing,et al."Trc-based high-precision spot position detection in inter-satellite laser communication".Sensors 20.19(2020):1-14. |
入库方式： OAI收割
来源：光电技术研究所
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