基于矩谐分析的航空重力向下延拓.pdf

第42卷第4期 测绘学报 V01．42，No．4 2013年8月 ActaGeodaeticaetCa Sinica rtographica Aug．，2013 JIANGTao，DANGYamin，ZHANG a1．DownwardContinuationofAirborneDataBasedon Harmonic Chuanyin，et Gravity Rectangular Geodaeticaet Analysis[J3．ActaCartographica 延拓EJ]．测绘学报，2013，42(4)：475480．) 基于矩谐分析的航空重力向下延拓 蒋 涛1，党亚民1，章传银1，刘站科2 1。中国测绘科学研究院，北京100830；2．国家测绘地理信息局第一大地测量队，陕西西安710054 DownwardContinuationofAirborne DataBasedon Harmonic Gravity RectangularAnalysis JIANGTa01，DANGYaminl，ZHANG Zhanke2 Chuanyinl，LIU 1．Chinese ofSu and FirstGeodeticSu B ofNational Academyrveying Jing100830，China；2．The Mapping，Bei rveyingrigade ofSu Administration andGeoinformation，Xi’arl710054，China rveying，Mapping r harmonic forthedownward ai rne Abstract：RectangulaanaIysis(RHA)isproposed continuation(DWC)ofrbo the data，withmathematicaImodelanddetailedrithm a simuIatednumericaI gravity aIgo resented．Byconducting p on basedEGM2008Earthravitationalmodel，threeDWC rectmethodandinverse experiment g approaches：RHA，di PoissonraImethodbasedon raIized estimatere redand a studied．The2．5’×2．5 integ gene ridge compa gravity disturbanceswithGausswhitenoiseatthe levelsre tothe the a downwardcontinuedGeo