摘要
利用椭球谐分析和球谐分析理论，结合全球和我国３０＇×３０＇平均空间重力异常以及由卫星跟踪资料推求的ＧＥＭＴ２模型，确定了３６０阶ＷＤＭ９４模型。
By using the theories of spheroidal and Spherical harmonic analyses, combining global (including the area of China) 30' x 30' mean free-air gravity anomalies as well as GEM T2 model determined by satellite tracking data,the WDM94 model has been determined complete to degree 360. The extern checks show that the accuracy of global 30' x30' gravity anomalies is ± 8. 7m Gal,and ± 9. 8mGal within China region. For the geoid undulation of China, the accuracy reaches decimetre level.
出处
《武汉测绘科技大学学报》
CSCD
1994年第4期283-291,共9页
Geomatics and Information Science of Wuhan University
基金
国家测绘局"八五"重点科技攻关资助
关键词
椭球谐分析
球谐分析
重力测量
重力场模型
spheroidal harmonic analysis
spherical harmonic analysis
WDM94 model to degree 360
