GRACE时变重力信号反演方法研究的进展和展望  

Progress and prospect of GRACE time-varying gravity signal inversion method

作　　者：汪秋昱 饶维龙 张岚 孙文科 WANG Qiuyu;RAO Weilong;ZHANG Lan;SUN Wenke(Key Laboratory of Computational Geodynamics,College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100048,China;Institute of Earthquake Forecasting,China Earthquake Administration,Beijing 100036,China)

机构地区：[1]中国科学院大学地球与行星科学学院,计算地球动力学重点实验室,北京100048 [2]中国地震局地震预测研究所,北京100036

出　　处：《华中科技大学学报（自然科学版）》2022年第9期104-116,共13页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(42104010,42174097,41974093,41774088);中国科学院前沿科学部署项目(qyzdy-sswsys003);中国博士后科学基金资助项目(2020T130641,2020M670424);中央高校基本科研业务费专项资金资助项目;中央级公益性科研院所基本科研业务费专项资金资助项目(CEAIEF20220214)。

摘　　要：为了解决GRACE时变重力研究全球或区域质量迁移中信号失真问题,学者们多采用信号反演方法,以恢复地表真实质量迁移信息.时变重力信号反演是卫星时变重力研究中最核心的关键技术之一.然而,目前反演方法众多,如单一尺度因子法、变尺度因子法、Forward Modeling、频率域反演方法、空间域最小二乘反演法等,它们之间的共性、差异性及适用性尚不十分清晰,是有待解决的重要科学与技术问题.为此总结了常用的GRACE重力信号反演方法研究的进展与现状,讨论了目前存在的问题,对比了不同反演方法的优缺点、应用领域差异,提供了反演方法选择的思路,并展望了未来重力卫星发展趋势,为卫星时变重力应用研究提供科学参考和依据.To solve the signal leakage in the studies by Gravity Recovery and Climate Experiment(GRACE)on global or regional mass changes,most scholars used signal inversion methods to recover the true surface mass change.Time-varying gravity signal inversion is one of the core key technologies in GRACE-based studies.However,at present,there are numerous inversion methods,such as single scale factor method,variable scale factor method,Forward Modeling,frequency-domain inversion method,space domain least-squares inversion method,etc.The commonalities,differences,and applicability among them are still not clear,which is an important scientific and technical problem to be solved.Therefore,the progress of the inversion methods of GRACE gravity signal was summarized which was widely used,the existing problems were discussed,the advantages and disadvantages of different inversion methods and differences in application fields were compared,the idea of inversion method selection was provided,and the future development trend of gravity satellites was projected,so as to provide scientific reference and suggestion about the application of satellite gravity.

关 键 词：变时变重力 重力卫星 反演方法 恢复方法 信号泄漏 

分 类 号：P223.4[天文地球—大地测量学与测量工程] P312.4[天文地球—测绘科学与技术]