Research on laser ranging technology based on chaotic pulse position modulation

doi:10.1117/12.2565422

	Research on laser ranging technology based on chaotic pulse position modulation
	Shu, Xiang 1,2; Liu, Bo 2; Liao, Sheng 2
	2020-07-12
会议日期	December 3, 2019 - December 5, 2019
会议地点	Beijing, China
卷号	11455
DOI	10.1117/12.2565422
页码	114558D
英文摘要	Chaotic pulse position modulation (CPPM) modulates chaotic information in the pulse interval. Since the distortion of pulse shape has little effect on information transmission, it has been widely used in communication field for many years, especially in secure communication. In this paper, a laser ranging system based on chaotic pulse position modulation is proposed. The CPPM signal combines both merits of pulse signal and chaotic signal to improve the anti-crosstalk capability of the system. The experimental scheme is given in this paper, and the CPPM signal based on logistic chaos mapping is realized by digital simulation. Since different parameters selection would affect the autocorrelation of signal sequence, DE (differential evolution) algorithm was used to optimize these parameters in order to make the sequence have better correlation characteristics. In view of the good correlation characteristics of the signal, time-domain matched filtering is adopted to obtain the delay. The chaotic pulse position modulation technique proposed in this paper preserves the strong anti-interference ability of random signals, also controls the maximum and minimum values of the interval between pulses, which reduces the performance requirements for the laser. Finally, the feasibility of the scheme is verified by experiments. Since the signal is obtained by oscilloscope sampling, the signal processing part adopts centroid algorithm to improve the measurement accuracy. © 2020 SPIE.
会议录	Proceedings of SPIE 11455 - Sixth Symposium on Novel Optoelectronic Detection Technology and Applications
文献子类	会议论文
语种	英语
ISSN号	0277-786X
内容类型	会议论文
源URL	[http://ir.ioe.ac.cn/handle/181551/9904]
专题	空天部
作者单位	1.University of Chinese Academy of Sciences, Beijing; 100049, China 2.Institute of Optics and Electronics, Chinese Academy of Sciences, Key Laboratory of Space Optoelectronic Precision Measurement Technology, Cas, Chengdu; 610209, China;
推荐引用方式 GB/T 7714	Shu, Xiang,Liu, Bo,Liao, Sheng. Research on laser ranging technology based on chaotic pulse position modulation[C]. 见:. Beijing, China. December 3, 2019 - December 5, 2019.