基于星载光学和SAR影像的多视立体定位误差分析
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摘要
推导了星载合成孔径雷达严密几何成像模型与有理多项式模型的等效关系,通过对全链路误差传播特性进行建模,仿真评估了定位精度与图像源夹角、同名点匹配精度等影响因素的定量关系,分析了异源立体定位所能达到的理论精度及其优越性,并推导出一套明确的数据选择策略。通过在轨数据实验充分验证了所提理论的正确性,并详细分析了不同数据组合下的误差规律,为异源立体定位的实际应用提供了可靠依据。
The equivalent relationship between the spaceborne synthetic aperture radar strict geometry imaging model and the rational polynomial model is derived.By modeling the error propagation characteristics of the whole link,we simulate and evaluate the quantitative relationship among positioning accuracy,image source angle and corresponding point matching accuracy.The theoretical accuracy which heterogeneous stereoscopic positioning can achieve and its superiority are analyzed,and a set of explicit data selection strategies is derived.Correctness of the proposed theory is fully verified by the in-orbit data test,and the error rules under different data combinations are analyzed in detail,which provides a reliable basis for the practical applications of heterogeneous stereoscopic positioning.
The equivalent relationship between the spaceborne synthetic aperture radar strict geometry imaging model and the rational polynomial model is derived.By modeling the error propagation characteristics of the whole link,we simulate and evaluate the quantitative relationship among positioning accuracy,image source angle and corresponding point matching accuracy.The theoretical accuracy which heterogeneous stereoscopic positioning can achieve and its superiority are analyzed,and a set of explicit data selection strategies is derived.Correctness of the proposed theory is fully verified by the in-orbit data test,and the error rules under different data combinations are analyzed in detail,which provides a reliable basis for the practical applications of heterogeneous stereoscopic positioning.
引文
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[2]Zhao R,Jiang Y,Zhang G,et al.Geometric accuracy evaluation of YG-18satellite imagery based on RFM[J].Photogrammetric Record,2017,32(157):33-47.
[3]Cheng Y F,Jin S Y,Wang M.A high accuracy image mosaicking approach of optical remote sensing satellite for multi-camera system[J].Acta Optica Sinica,2017,37(8):0828003.程宇峰,金淑英,王密.一种光学遥感卫星多相机成像系统的高精度影像拼接方法[J].光学学报,2017,37(8):0828003.
[4]Jeong J,Yang C,Kim T.Geo-positioning accuracy using multiple-satellite images:IKONOS,QuickBird,and KOMPSAT-2stereo images[J].Remote Sensing,2015,7(4):4549-4564.
[5]Tang S,Wu B,Zhu Q.Combined adjustment of multiresolution satellite imagery for improved geo-positioning accuracy[J].ISPRS Journal of Photogrammetry and Remote Sensing,2016,114:125-136.
[6]Wu Y D.Comparative analysis on block adjustment methods for multi-sensor SAR images[J].Science of Surveying and Mapping,2014,39(9):24-28.吴颖丹.多源SAR影像区域网平差的比较研究[J].测绘科学,2014,39(9):24-28.
[7]Wang T Y,Zhang G,Li D R.Comparison between plane and stereo block adjustment for ZY-3satellite images[J].Acta Geodaetica et Cartographica Sinica,2014,43(4):389-395.汪韬阳,张过,李德仁,等.资源三号测绘卫星影像平面和立体区域网平差比较[J].测绘学报,2014,43(4):389-395.
[8]Li Y Y,Wu H,Sun X K,et al.Research about stereo positioning using multi-source remote sensing images[C]∥Sun J,Liu J,Fan S,et al.Proceedings of China Satellite Navigation Conference(CSNC),Singapore:Springer,2016,389:513-525.
[9]Li Y Y,Wu H,Chang X L.Research on stereo positioning with CCD and SAR multi-view image[J].Science of Surveying and Mapping,2016,41(11):137-141.李莹莹,吴昊,常学立.一种异源多视影像的立体定位方法[J].测绘科学,2016,41(11):137-141.
[10]Raggam J,Almer A,Strobl D.A combination of SAR and optical line scanner imagery for stereoscopic extraction of 3-D data[J].ISPRS Journal of Photogrammetry and Remote Sensing,1994,49(4):11-21.
[11]Toutin T.Spatiotriangulation with multisensor HRstereo-images[J].IEEE Transactions on Geoscience and Remote Sensing,2006,44(2):456-462.
[12]Xing S,Xu Q,He Y.Combined stereo location among multi-sensor remote sensing images[J].Geomatics and Information Science of Wuhan University,2009,34(5):522-526.邢帅,徐青,何钰.多源遥感影像“复合式”立体定位的研究[J].武汉大学学报:信息科学版,2009,34(5):522-526.
[13]Cheng C Q,Zhang J X,Huang G M,et al.Combined positioning of TerraSAR-X and SPOT-5HRS images with RFM considering accuracy information of orientation parameters[J].Acta Geodaetica et Cartographica Sinica,2017,46(2):179-187.程春泉,张继贤,黄国满,等.考虑定向参数精度信息的TerraSAR-X和SPOT-5 HRS影像RFM联合定位[J].测绘学报,2017,46(2):179-187.
[14]Wang J,Balz T,Liao M.Absolute geolocation accuracy of high-resolution spotlight Terra SAR-X imageryvalidation in Wuhan[J].Geo-Spatial Information Science,2016,19(4):267-272.
[15]You H J,Ding C B,Fu K.SAR image localization using rigorus SAR collinearity equation model[J].Acta Geodaetica et Cartographica Sinica,2007,36(2):158-162.尤红建,丁赤飚,付琨.SAR图像对地定位的严密共线方程模型[J].测绘学报,2007,36(2):158-162.
[16]Liu J,Qiu X,Hu Y,et al.Geolocation of HJ-1Csatellite image using one GCP[C]∥IEEE International Geoscience and Remote Sensing Symposium(IGARSS),Quebec City,QC,Canada,IEEE,2014:4776-4779.
[17]Zhang G,Fei W B,Li Z.Evaluation of the RPC model for spaceborne SAR Imagery[J].Photogrammetric Engineering and Remote Sensing,2010,76(6):727-733.
[18]Zhang G,Qin X W.Spaceborne SAR and InSAR data processing technology based on RPC model[M].Beijing:Surveying and Mapping Press,2013.张过,秦旭文.基于RPC模型的星载SAR和InSAR数据处理技术[M].北京:测绘出版社,2013.