无线电工程

卫星导航系统主要由空间段导航卫星、地面段运行控制系统和接收机组成。在轨测试是在导航卫星发射入轨后对其各项功能及指标进行全面检验,判断是否满足卫星导航系统运行的要求。导航卫星在轨测试设备具有与地面运行控制系统相同的信号体制和基本功能,专业用于导航卫星的在轨测试。介绍了导航卫星在轨测试设备的组成,简单分析了利用该设备进行导航卫星在轨测试的方法,提出了一套行之有效的针对导航卫星在轨测试的方案。

The satellite navigation system is comprised of three segments:satellite constellation,ground-control/monitoring network and user receiving equipment.The satellite health and signal quality influence the user equipment,so it is important to carry on the in-orbit test for the satellite after it has been launched.The satellite in-orbit test equipment is a kind of professional equipment to the navigation satellite in-orbit test.It has similar functions and can simulate the signals of control segments.This paper introduces a valid method to carry on the in-orbit test of navigation satellite by the satellite in-orbit test equipment.