光学与SAR卫星遥感影像复合式“立体”定位技术的研究
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摘要
针对某些特殊区域因气候或污染造成立体成像测图的困难,尝试将光学与SAR卫星遥感影像联立构成"立体像对"进行复合式定位,并对其原理与方法进行研究与试验。以线阵CCD构像模型及F.Leberl公式为基础,利用若干地面控制点对线阵CCD影像和SAR影像分别进行外定向,再依据外定向参数将两种影像构成一"立体像对",从而建立复合式立体定位的数学模型,在已知一组同名像点的情况下,即可解算出相应地面点的大地坐标。初步试验表明,将具有一定重叠范围的多源卫星遥感影像构成"立体像对"进行复合式定位是可行的,且复合式立体定位可取得接近于传统立体像对的定位精度。
It is still difficult to acquire stereoscopic space-borne image pairs of some area for complicated climate condition or serious atmosphere pollution.This paper describes the geometric aspects and the mathematical treatment for the stereoscopic image pair composed of optical and SAR space-borne images in positioning.First,the geometric equation for linear array push-broom imagery and F.Lerbel model for SAR imagery as well as methods to simultaneously determine or refine individual parameters of these models are briefly reviewed.And a straight-forward single-step procedure has been developed which follows the philosophy of photogrammetric bundle adjustment techniques.Then the composite stereoscopic pair is constructed according to these geometry models of optical and SAR images.The stereo positioning is the process of determining the ground coordinate of a ground point from a pair of corresponding homologous points in the composite stereoscopic pair.Experimental results show that it is feasible to construct stereoscopic pair with one optical and SAR image for composite stereo positioning,and its average positioning RMS value is close to stereoscopic pair with classical optical or SAR stereoscopic pairs.
It is still difficult to acquire stereoscopic space-borne image pairs of some area for complicated climate condition or serious atmosphere pollution.This paper describes the geometric aspects and the mathematical treatment for the stereoscopic image pair composed of optical and SAR space-borne images in positioning.First,the geometric equation for linear array push-broom imagery and F.Lerbel model for SAR imagery as well as methods to simultaneously determine or refine individual parameters of these models are briefly reviewed.And a straight-forward single-step procedure has been developed which follows the philosophy of photogrammetric bundle adjustment techniques.Then the composite stereoscopic pair is constructed according to these geometry models of optical and SAR images.The stereo positioning is the process of determining the ground coordinate of a ground point from a pair of corresponding homologous points in the composite stereoscopic pair.Experimental results show that it is feasible to construct stereoscopic pair with one optical and SAR image for composite stereo positioning,and its average positioning RMS value is close to stereoscopic pair with classical optical or SAR stereoscopic pairs.
引文
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[4]JORDI I,ALAIN G.On the Possibility of Automatic Multisen-sor Image Registration[J].IEEE Transactions on Geoscienceand Remote Sensing,2004,42(10):2 104-2 120.
[5]FANG Yong,CHANG Ben-yi,HU Hai-yan,CHEN Hong.TheResearch on SAR Image Digital Mapping Technique[J].Bul-letin of Surveying and Mapping,2006,(8):6-8.(方勇,常本义,胡海彦,陈虹.星载SAR图像数字测图技术研究[J].测绘通报2006,(8):6-8.)
[6]QIAN Zeng-bo,LIU Jing-yu,XIAO Guo-chao.Space Photo-grammetry[M].Beijing:PLAPress,1992.63-66.(钱曾波,刘静宇,肖国超.航天摄影测量[M].北京:解放军出版社,1992.63-66.)
[7]CHANG Ben-yi.The Preliminary Research on Stereo PlottingMethod of Spot Imagery[J].Acta Geodaetica et CartographicaSinica,1989,18(3):183-189.(常本义.SPOT像片立体测图方法初探[J].测绘学报,1989,18(3):183-189.)
[8]YAN Qin,ZHANG Zu-xun,ZHANG Jian-qing.Orientation ofRemote Sensing Images Taken by CCD from Different Orbit[J].Geomatics and Information Science of Wuhan University,2001,26(3):270-274.(燕琴,张祖勋,张剑清.异轨遥感CCD影像外方位元素的解求[J].武汉大学学报(信息科学版),2001,26(3):270-274.)
[9]XIAO Guo-chao,ZHU Cai-ying.Radargrammetry[M].Bei-jing:Earthquake Press,2001.54-56.(肖国超,朱彩英.雷达摄影测量[M].北京:地震出版社,2001.54-56.)
[10]LEBERL F W,et al.Satellite Radargrammetry[M].Graz:Austria Graz Research Center,1982.
[11]ZHANG Yan,WANG Tao,ZHU Shu-long,ZHU Bao-shan.Application of Combined Ridge-Stein Estimator to LinearPushbroom Imagery Exterior Orientation[J].Geomatics andInformation Science of Wuhan University,2004,29(10):893-896.(张艳,王涛,朱述龙,朱宝山.岭-压缩组合估计在线阵推扫式影像外定向中的应用[J].武汉大学学报(信息科学版),2004,29(10):893-896.)
[12]WANG Dong-hong,LIU Jun,ZHANG Li.Precise Rectifica-tion of Space-borne SAR Images Based on Improved F.LeberlModel[J].Bulletin of Surveying and Mapping,2005,(10):12-15.(王冬红,刘军,张莉.基于F.Leberl改进模型的星载SAR影像精纠正[J].测绘通报,2005,(10):12-15.)
[13]CHEN Pu-huai,DOWMAN I J.A Weighted Least SquaresSolution for Space Intersection of Spaceborne Stereo SAR Data[J].IEEE Transactions on Geoscience and Remote Sensing,2001,39(2):233-240.
[2]RAGGAM J,ALMER A.Mathematical Aspects of Multi-Sen-sor Stereo Mapping[A].IGARSS’90[C].[s.l.]:[s.n.],1990.
[3]RENOUARD L,PERLANTF.Geocoding SPOTProducts withERS-1 Geometry[A].Proceedings of the Second ERS-1,Space at the Service of the Environment[C].Hamburg:[s.n.],1993.653-658.
[4]JORDI I,ALAIN G.On the Possibility of Automatic Multisen-sor Image Registration[J].IEEE Transactions on Geoscienceand Remote Sensing,2004,42(10):2 104-2 120.
[5]FANG Yong,CHANG Ben-yi,HU Hai-yan,CHEN Hong.TheResearch on SAR Image Digital Mapping Technique[J].Bul-letin of Surveying and Mapping,2006,(8):6-8.(方勇,常本义,胡海彦,陈虹.星载SAR图像数字测图技术研究[J].测绘通报2006,(8):6-8.)
[6]QIAN Zeng-bo,LIU Jing-yu,XIAO Guo-chao.Space Photo-grammetry[M].Beijing:PLAPress,1992.63-66.(钱曾波,刘静宇,肖国超.航天摄影测量[M].北京:解放军出版社,1992.63-66.)
[7]CHANG Ben-yi.The Preliminary Research on Stereo PlottingMethod of Spot Imagery[J].Acta Geodaetica et CartographicaSinica,1989,18(3):183-189.(常本义.SPOT像片立体测图方法初探[J].测绘学报,1989,18(3):183-189.)
[8]YAN Qin,ZHANG Zu-xun,ZHANG Jian-qing.Orientation ofRemote Sensing Images Taken by CCD from Different Orbit[J].Geomatics and Information Science of Wuhan University,2001,26(3):270-274.(燕琴,张祖勋,张剑清.异轨遥感CCD影像外方位元素的解求[J].武汉大学学报(信息科学版),2001,26(3):270-274.)
[9]XIAO Guo-chao,ZHU Cai-ying.Radargrammetry[M].Bei-jing:Earthquake Press,2001.54-56.(肖国超,朱彩英.雷达摄影测量[M].北京:地震出版社,2001.54-56.)
[10]LEBERL F W,et al.Satellite Radargrammetry[M].Graz:Austria Graz Research Center,1982.
[11]ZHANG Yan,WANG Tao,ZHU Shu-long,ZHU Bao-shan.Application of Combined Ridge-Stein Estimator to LinearPushbroom Imagery Exterior Orientation[J].Geomatics andInformation Science of Wuhan University,2004,29(10):893-896.(张艳,王涛,朱述龙,朱宝山.岭-压缩组合估计在线阵推扫式影像外定向中的应用[J].武汉大学学报(信息科学版),2004,29(10):893-896.)
[12]WANG Dong-hong,LIU Jun,ZHANG Li.Precise Rectifica-tion of Space-borne SAR Images Based on Improved F.LeberlModel[J].Bulletin of Surveying and Mapping,2005,(10):12-15.(王冬红,刘军,张莉.基于F.Leberl改进模型的星载SAR影像精纠正[J].测绘通报,2005,(10):12-15.)
[13]CHEN Pu-huai,DOWMAN I J.A Weighted Least SquaresSolution for Space Intersection of Spaceborne Stereo SAR Data[J].IEEE Transactions on Geoscience and Remote Sensing,2001,39(2):233-240.
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