国防科技大学学报2013，Vol.35Issue(4)：14-19,6.
内编队地球重力场测量性能数值分析
Numerical analysis for earth gravity field measurement performance by inner-formation flying system
摘要
Abstract
The Earth gravity field can be measured with high precision by constructing the purely gravitational orbit of the inner-satellite in Inner-formation Flying System (IFS),which offers a new way to carry out gravity satellite measurement without accelerometers.Since it is difficult to analytically evaluate gravity field measurement performance by IFS,numerical simulation for gravity field measurement was done based on MATLAB parallel programs,and the highest degree of recovered gravity field model and the corresponding geoid and gravity anomaly errors were obtained.Under the condition that IFS orbit altitude is 300km,non-gravitational interference on the inner-satellite is 1.0 × 10-10m/s2,the outersatellite orbit determination error is 3cm and the measurement error of relative position between the inner-satellite and outer-satellite is 1mm,the highest degree of recovered gravity field model is 72,the corresponding geoid cumulative error is 44cm,and the corresponding gravity anomaly cumulative error is 4.5mGal.It is known that the effective frequency band of gravity field measurement by IFS is at the lower degree.关键词
内编队/重力场/数值模拟/有效阶数/定轨误差Key words
Inner-formation firing system/ earth gravity field/ numerical analysis/ effective frequency band/ orbit determination error分类
航空航天引用本文复制引用
刘红卫,王兆魁,张育林..内编队地球重力场测量性能数值分析[J].国防科技大学学报,2013,35(4):14-19,6.基金项目
国家高分重大专项项目(GFZX04011101) （GFZX04011101）
国家自然科学基金项目(11002076) （11002076）
