国际卫星重力梯度测量计划研究进展

本文首先阐述了重力梯度测量原理、从20世纪初到21世纪初重力梯度仪的研究历程、卫星重力梯度仪(静电悬浮重力梯度仪、超导重力梯度仪和量子重力梯度仪)的技术特征以及卫星重力梯度测量的特点;其次,介绍了基于卫星重力梯度技术恢复250阶GOCE地球重力场以及论证首先开展一维径向重力梯度仪的研制进而恢复高精度和高空间解析度中高频地球重力场可行性方面的研究进展;最后,建议我国尽早开展基于时空域混合法解算中高频地球重力场和卫星重力梯度测量系统误差分析的预先研究。

Study progress in international satellite gravity gradiometry programs

Firstly,the measuring principles of gravity gradiometry,research courses of gradiometer from the beginning of 20th century to 21st century,technical features of satellite gravity gradiometer including electrostatic suspension gradiometer,superconducting gravity gradiometer and quantum gravity gradiometer and characteristics of satellite gravity gradiometry (SGG) were described.Secondly,the study progresses in the recovery of 250 order GOCE Earth's gravitational field based on SGG and the feasibility of carrying out one-dimensional radial gradiometer development at first and further recovering the high-accuracy,high-resolution and medium-high frequency Earth's gravitational field were introduced.Finally,the author suggested that China should do some pre-researeh on temporalspatial domain based medium-high frequency Earth's gravitational field resolution and error analysis of SGG as soon as possible.