Resampling Technique in the Orthogonal Direction for Down-looking Synthetic Aperture Imaging 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

	Resampling Technique in the Orthogonal Direction for Down-looking Synthetic Aperture Imaging Ladar
	Li, Guangyuan ; Sun, Jianfeng ; Lu, Zhiyong ; Zhang, Ning ; Cai, Guangyu ; Sun, Zhiwei ; Liu, Liren
	2015
会议名称	conference on unconventional imaging and wavefront sensing
通讯作者	li, gy (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	the implementation of down-looking synthetic aperture imaging ladar(sail) uses quadratic phase history reconstruction in the travel direction and linear phase modulation reconstruction in the orthogonal direction. and the linear phase modulation in the orthogonal direction is generated by the shift of two cylindrical lenses in the two polarization-orthogonal beams. therefore, the fast-moving of two cylindrical lenses is necessary for airborne down-looking sail to match the aircraft flight speed and to realize the compression of the orthogonal direction, but the quick start and the quick stop of the cylindrical lenses must greatly damage the motor and make the motion trail non-uniform. to reduce the damage and get relatively well trajectory, we make the motor move like a sinusoidal curve to make it more realistic movement, and through a resampling interpolation imaging algorithm, we can transform the nonlinear phase to linear phase, and get good reconstruction results of point target and area target in laboratory. the influences on imaging quality in different sampling positions when the motor make a sinusoidal motion and the necessity of the algorithm are analysed. at last, we perform a comparison of the results of two cases in resolution.
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/181231/17154]
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	1.[Li, Guangyuan 2.Sun, Jianfeng 3.Lu, Zhiyong 4.Zhang, Ning 5.Cai, Guangyu 6.Sun, Zhiwei 7.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	Li, Guangyuan,Sun, Jianfeng,Lu, Zhiyong,et al. Resampling Technique in the Orthogonal Direction for Down-looking Synthetic Aperture Imaging Ladar[C]. 见:conference on unconventional imaging and wavefront sensing.