高精度星间微波测距技术

卫卫跟踪（SST）技术是目前地球重力场测量最有价值和应用前景的方法之一。高精度K波段星间微波测距系统（KBR K Band Ranging System）低低卫卫跟踪（SST-Ⅱ）重力卫星的关键有效载荷，它是一微米量级的测距系统，通过处理高精度的星间距离和距离变化率数据，可以恢复出地球重力场。在研究星间双路微波测距原理的基础上，提出了一种KBR系统的基本结构，详细描述了数据处理过程和KBR系统研究需要突破的关键技术，分析了国内目前的研究水平，给出了我国未来开展KBR系统研究的一些建议。

The Technology of High Accuracy Inter-Satellite Microwave Ranging

Satellite-to-satellite tracking is one of the most promising and valuable methods for gravity field determination.The high accuracy inter-satellite K Band Ranging System(KBR) is the major payload of gravity exploring satellite using satellite to satellite tracking in low-low model.It is a micron-level ranging system.The geopotential is determined by processing precise range or range rate observables between the two satellites.Based on the theory study of the dual way microwave ranging system between two satellites,the fundamental structure of KBR was presented in this paper.The data processing progress and the key technology of KBR need to be broke through are described in detail.The current research level of our country is analyzed,and some suggestions are proposed for the future KBR project of China.