Imaging Signal-to-Noise Ratio of Synthetic Aperture Ladar

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 空间激光信息技术研究中心

	Imaging Signal-to-Noise Ratio of Synthetic Aperture Ladar
	Liu, Liren
	2015
会议名称	conference on unconventional imaging and wavefront sensing
通讯作者	liu, lr (reprint author), chinese acad sci, shanghai inst opt & fine mech, key lab space laser commun & detect technol, shanghai 201800, peoples r china.
英文摘要	on the basis of the poisson photocurrent statistics in the photon-limited heterodyne detection, in this paper, the signal-to-noise ratios in the receiver in the time domain and on the focused 1-d image and 2-d image in the space domain are derived for both the down-looking and side-looking synthetic aperture imaging ladars using pin or apd photodiodes. the major shot noises in the down-looking sail and the side-looking sail are, respectively, from the dark current of photodiode and the local beam current. it is found that the ratio of 1-d image snr to receiver snr is proportional to the number of resolution elements in the cross direction of travel and the ratio of 2-d image snr to 1-d image snr is proportional to the number of resolution elements in the travel direction. and the sensitivity, the effect of fourier transform of sampled signal, and the influence of time response of detection circuit are discussed, too. the study will help to correctly design a sail system.
收录类别	CPCI
会议录	unconventional imaging and wavefront sensing 2015
会议录出版者	spie-int soc optical engineering
语种	英语
内容类型	会议论文
源URL	[http://ir.siom.ac.cn/handle/181231/17150]
专题	上海光学精密机械研究所_空间激光信息技术研究中心
作者单位	[Liu, Liren] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Space Laser Commun & Detect Technol, Shanghai 201800, Peoples R China
推荐引用方式 GB/T 7714	Liu, Liren. Imaging Signal-to-Noise Ratio of Synthetic Aperture Ladar[C]. 见:conference on unconventional imaging and wavefront sensing.