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页数:9页
时间:2019-05-27
《方差分量估计在机载InSAR区域网平差中的应用_熊新》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第45卷第5期测绘学报Vol.45,No.52016年5月ActaGeodaeticaetCartographicaSinicaMay,2016引文格式:熊新,靳国旺,张红敏,等.方差分量估计在机载InSAR区域网平差中的应用[J].测绘学报,2016,45(5):592-600.DOI:10.11947/j.AGCS.2016.20150415.XIONGXin,JINGuowang,ZHANGHongmin,etal.ApplicationofVarianceComponentsEstimationinAirborneInSARBlockAdjustment[J].ActaGeodae
2、ticaetCartographicaSinica,2016,45(5):592-600.DOI:10.11947/j.AGCS.2016.20150415.方差分量估计在机载InSAR区域网平差中的应用熊新1,靳国旺1,2,张红敏1,徐青11.信息工程大学地理空间信息学院,河南郑州450001;2.中国测绘科学研究院,北京100039ApplicationofVarianceComponentsEstimationinAirborneInSARBlockAdjustment1,JINGuowang1,2,ZHANGHongmin1,XUQing1XIONGXin1.Instituteof
3、GeospacialInformation,InformationEngineeringUniversity,Zhengzhou450001,China;2.ChineseAcademyofSurveyingandMapping,Beijing100039,ChinaAbstract:Basedontheideaofposteriorvariancecomponentestimation,aimingattheproblemthatvariancecomponentforeachobservationcomponentcan’tbeestimateddirectly,thetheoryof
4、weightsdeterminationforairborneInSARinterferometricparameterscalibrationwithblockadjustmentisstudiedandthecorrespondingcalibrationmethodisdesignedonthebasisoftheextendedmodelofvariancecomponentsestimationofHelmerttype.CalibrationexperimentsperformedonChinesedualantennaairborneInSARdataconfirmthatt
5、hecalibrationschemeswithposteriorvariancecomponentestimatedcantakegenerationaccuracyandmosaicaccuracyofDEMintoaccountreasonably.Keywords:interferometricsyntheticapertureradar;Helmert;interferometricparameters;blockadjustment;weightsdeterminationFoundationsupport:TheNationalNaturalScienceFoundation
6、ofChina(Nos.41071296;41474010;61401509);TheNationalHigh-techResearchandDevelopmentProgramofChina(863Program)(No.2011AA120402)摘要:基于验后方差分量估计的思想,针对观测值中各类观测分量的方差难以直接估计的问题,研究了机载InSAR区域网平差干涉参数定标权值确定理论,设计了利用Helmert方差分量估计扩展模型的机载InSAR区域网平差干涉参数定标权值确定方法。采用我国机载双天线InSAR数据进行相关试验,表明验后估计定权能合理地顾及DEM的生成精度和拼接精度。关键词:
7、合成孔径雷达干涉测量;Helmert;干涉参数;区域网平差;定权中图分类号:P231文献标识码:A文章编号:1001-1595(2016)05-0592-09基金项目:国家自然科学基金(41071296;41474010;61401509);国家863计划(2011AA120402)合成孔径雷达干涉测量(interferometric的地形测绘,单个像对的InSAR数据干涉参数定syntheticaperturerada
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