卫星跟踪卫星技术的进展及应用前景

卫星跟踪卫星技术被认为是 2 1世纪初最有价值和应用前景的高效重力探测技术 ,旨在测定中长波重力场的精细结构及时间相依变化。本文首先简要阐述卫星跟踪卫星技术的发展背景及概况 ,其次介绍目前已经实施和将要实施的卫星跟踪卫星计划 CHAMP和 GRACE的进展情况 ,最后讨论该技术在精化地球重力场和研究相关地学问题中的应用前景。

The Progress and Application Prospects of Satellite-to-Satellite Tracking Technology

At the beginning of 21st century, satellite to satellite tracking (SST) is one of the most promising techniques for the future progress in studying the earth's gravity field. The primary science objective of ongoing satellite missions like CHAMP, GRACE and GOCE , is to provide with unprecedented accuracy, global and high resolution estimates of the constant and time variable part of the Earth's gravity field. In the paper, the general situation and scientific background for developing SST are summarized firstly. Then the primary progress of SST including orbit characteristics, mission scenario, scientific objective, main critical techniques and their technical parameters are introduced on the basis of ongoing satellite mission GRACE. Finally, the application prospects for refining the earth's gravity field and studying some related problems of earth science are discussed utilizing SST observations.