空间卫星的相对距离和钟面时差的准确测量,是实现多星之间时间同步,完成特定任务的重要基础。在介绍空间星间测试验证系统与双向单程距离和时差测量的基础上,提出一种闭环自测的零值标定方法。经理论分析和测试验证表明,所测数据稳定可靠,能够满足实际测量的要求。 The accurate measurement of the relative distance of space satellites and the clock face time difference is an important basis for achieving the time synchronization among multiple stars and accomplishing specific tasks. Based on the introduction of space intersatellite test and verification system and two-way one-way distance and time difference measurement, a closed-loop self-test zero-value calibration method is proposed. Theoretical analysis and test verification show that the measured data is stable and reliable, which can meet the requirements of actual measurement.