中文摘要：

星间精密微波测距系统是GRACE卫星最核心的有效载荷之一,系统仿真模拟技术的预研是GRACE计划跟踪研究不可或缺的环节。通过对测距系统基频相位观测值的模拟,单频双程星间相位观测值模型、单频双程星间距离观测值模型及双频双程星间距离值模型的建立,实现了由星上原始相位数据到星间有偏距离观测值的转换,给出了基频相位观测值的模拟结果及预处理结果。

英文摘要：

High accuracy inter-satellite microwave ranging system is one of the most important key loads of GRACE mission,and the technology of simulation is the necesary link for the study of GRACE mission.We simulated the base phase for ranging system,built the mathmatic model of two-way phase measurements,two-way range measurements and dual-band two-way range measurements,accomplished the conversion from the base phase data to the baised-range measurments,and the results of the simulation and pre-processing are showed.