Method of Tensor Invariant Based on Non-Full Tensor Satellite Gravity Gradients

详细信息   

• 责任者：Wu Xing (Center of Engineering Design and Research ; Headquarters of General Equipment ; Beijing 100028 ; China） ; Wang Kai
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(4)
• 关键词：卫星法 ; satellite methods ; 重力场 ; gravity field
• 页码：p.966-976
• 图表：6 illus., 2 tables, 22 refs.
• 分类号：0400
• 出版序号：742
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

///The precision of gravity gradient values decreased greatly after transformation from satellite gradiometer coordinate system to earth-fixed coordinate system in the processing of non-full tensor observational data of satellite gravity gradient. The method of tensor invariant is mainly studied to overcome the issue mentioned above. Firstly, with the linearization of gravity gradient tensor, invariant observational model is established on the satellite orbital plane. Then, computing errors of tensor invariant are analyzed aiming at non-full tensor observational data of GOCE mission. Finally, general torus harmonic analysis is introduced in the simulation, which shows that the processing result of tensor invariant is better than that of tensor components with big satellite attitude errors, and the method of tensor invariant could deal with the non-full tensor observational data effectively.