重力场基准图的最优匹配尺度研究  

Optimal matching scale of gravity reference image

作　　者：吴华玲[1] 徐效波[1] 王建强[1] 王胜平[1] 

机构地区：[1]东华理工大学,江西抚州344000

出　　处：《测绘科学》2014年第5期84-88,共5页Science of Surveying and Mapping

基　　金：江西省教育厅青年科学基金(GJJ11146);东华理工大学博士科研启动金(DHBK1003);东华理工大学科研基金(自然科学类)(DH-BK201114);江西省教育厅科技计划项目(GJJ12394)

摘　　要：地球重力场具有多尺度特性,本文以重力匹配辅助惯性导航的需求为研究背景,围绕重力场基准图开展重力场的最优尺度分析研究,并引入小波分析方法建立重力场基准图数据的多尺度表达模型,选择适合重力匹配的最优尺度,用粗糙度特征选取重力场可匹配区域,然后通过ICCP和TERCOM算法在可匹配区域内进行重力匹配实验,检验理论计算得到的最优尺度是否适合于匹配定位,从定量的角度证实了最优尺度选择结论的正确性。Earth＇s gravity field has multi-scale features.This article based on the demands of gravity matching aided inertial navigation,researched on the optimal scale analysis of gravity field.The wavelet analysis method was introduced to establish multi-scale model of gravity reference image,and the optimal scale suitable for gravity matching was selected.Then in order to test whether the optimal scale from theoretical calculation was suitable for matching,gravity matching experiments were taken using ICCP and TERCOM algorithm in matching areas.The result quantitatively showed that the optimal scale selection was correct.

关 键 词：重力场基准图 小波分解 最优尺度 重力匹配 匹配概率 

分 类 号：P223[天文地球—大地测量学与测量工程]