Maintenance method of signal coherence in lidar and experimental validation

doi:10.1364/ol.470127

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Maintenance method of signal coherence in lidar and experimental validation
	J. H. Gao; D. J. Li; K. Zhou; A. J. Cui; J. Wu and Y. Yao
刊名	Optics Letters
	2022
卷号	47 期号:20 页码:5356-5359
ISSN号	0146-9592
DOI	10.1364/ol.470127
英文摘要	According to the self-heterodyne signal obtained by lidar under different fiber delay times, the model of the local oscillator signal was established, and the maintenance method of signal coherence in lidar based on the digital delay was improved by using multiple sinusoidal frequency modulation components. An imaging detection experiment was carried out at a distance of 5.4 km. The coherence of the lidar signal was maintained by combining the transmitting reference channel correction method and the local oscillator reference channel compensation method, accompanied by the use of a phase spectrum to analyze the improvement effect. The processing results of the echo signal showed that the method could remove the high-order phase errors that cannot be compensated by the phase gradient autofocus algorithm and improve the signal coherence, which could be used for the detection and imaging of long-range targets. (C) 2022 Optica Publishing Group.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/66827]
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	J. H. Gao,D. J. Li,K. Zhou,et al. Maintenance method of signal coherence in lidar and experimental validation[J]. Optics Letters,2022,47(20):5356-5359.
APA	J. H. Gao,D. J. Li,K. Zhou,A. J. Cui,&J. Wu and Y. Yao.(2022).Maintenance method of signal coherence in lidar and experimental validation.Optics Letters,47(20),5356-5359.
MLA	J. H. Gao,et al."Maintenance method of signal coherence in lidar and experimental validation".Optics Letters 47.20(2022):5356-5359.