利用Wenzel加权谱组合法拓展GOCE重力场模型  

Extending GOCE Geopotential Model Using Wenzel's Weighted Spectral Combination

作　　者：张敏利 赵德军 陈永祥 

机构地区：[1]西安测绘信息技术总站,西安市西影路36号710054 [2]大地测量与地球动力学国家重点实验室,武汉市徐东大街430号430077

出　　处：《大地测量与地球动力学》2015年第3期481-484,共4页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41104047);大地测量与地球动力学重点实验室开放基金(SKLGED2013-4-5-E)

摘　　要：根据GOCE和EGM08重力场模型的频谱互补性,利用Wenzel加权谱组合法构建了GOCE和EGM08的组合重力场模型。累积大地水准面误差表明,组合重力场模型具有明显的优势。美国实测GPS/水准检验结果表明,Dir4+EGM08的组合模型精度最高,比EGM08模型精度提高了8%。Some combined GOCE and EGM08 geopotential models are established using Wenzel＇ s weighted spectral combination approach. Cumulative geoid errors show that combined models have better performance than the EGM08 model alone. Results of geoid differences at GPS/leveling bench- mark in America indicate that a Dir4＋EGM08 combined model has best performance amongst others, enhancing geoid precision up to 8% relative to EGM08 model.

关 键 词：重力场模型 谱组合法 GPS/水准 GOCE EGM08 时域法 直接法 

分 类 号：P223[天文地球—大地测量学与测量工程]