海洋测绘2017，Vol.37Issue(6)：1-4,4.DOI:10.3969/j.issn.1671-3044.2017.06.001
西太平洋海域卫星测高重力异常反演与精度评估
Gravity Anomaly and Its Accuracy Assessment from Multi-source Altimetry Data in the Western Pacific Area
摘要
Abstract
In this paper,multi-source altimetry data from satellite T/P,ERS 1/GM,ERS 1/ERM,ERS2/ERM,GEOSAT/ERM and GEOSAT/GM were jointed.Using remove-restore method and fast Fourier transform algorithm,1'× 1'near China's Western Pacific (0° ～ 40° N,105° E ～ 145 ° E) gravity anomaly model was calculated based on inverse Vening-Meinesz formula and EGM2008 gravity model.For more objectively evaluation to the gravity anomaly accuracy from multi-satellite altimetric data,the result in this paper was compared with the shipborne gravimetric data,which was used as exterior checking.Two trajectories in different feature areas were chosen for comparison of the proposed gravity anomaly model,EMG2008 model,gravity anomaly model from D.T.Sandwell (Scripps Institution of Oceanography,University of California San Diego,USA) and shipboard gravity anomaly data.The results show that general tendencies of the proposed model were in well agreement with shipboard gravity data while the difference between them had a mean square error of 4.16 mGal.Overall this model has similar accuracy with EGM2008 and Sandwell models.The research in inversion of sea gravity should be up to the world advanced level.关键词
卫星测高/重力异常/垂线偏差/EGM2008/移去-恢复方法/逆Vening-MeineszKey words
satellite altimetry/gravity anomaly/vertical deflection/EMG2008/remove-restore method/inverse Vening-Meinesz分类
天文与地球科学引用本文复制引用
王虎彪,柯小平,武凛,柴华,王勇..西太平洋海域卫星测高重力异常反演与精度评估[J].海洋测绘,2017,37(6):1-4,4.基金项目
国家自然科学基金(41374086,41574073,41674021) （41374086,41574073,41674021）
国家测绘地理信息局测绘基础研究基金(14-01-07). （14-01-07）
