导航卫星星间链路测试评估技术研究

Research of Testing and Evaluation Technique for Navigation Satellites via Inter-satellite Link

随着北斗导航卫星的陆续发射,导航设备功能在逐步完善,卫星导航装备性能的好坏直接影响到定位精度,利用地面系统完成对导航卫星性能指标的测试评估变得尤为重要。针对非视导航卫星难以进行观测的问题,设计了一种星间链路测试评估系统平台架构,探讨了利用星间链路对导航卫星进行测试评估的方法,分别对接收性能指标、发射性能指标和测量性能指标进行了测试评估,并给出了对应误差的简要分析。分析结果表明,利用导航卫星星间链路测试评估系统能够完成对非视导航卫星性能指标的监测,为导航卫星状态监测领域提供了一种新的思路。

With the successively launching of the BeiDou navigation satellite,the function of navigation equipment is gradually perfected,and the performance of the satellite navigation equipment has a direct impact on the positioning accuracy.So it becomes particularly important to use the ground system to complete the testing and evaluation for the satellite performance indicators.For non-visual navigation satellite observations hard technical problems,we design an inter-satellite link test evaluation system platform architecture,and discuss the method of testing and evaluating the navigation satellite by using inter-satellite link.Receiving performance,transmitting performance and measuring performance were tested and evaluated respectively,and the brief analysis of the corresponding error is presented.The analysis results show that the performance index of non-visual navigation satellite can be monitored by the navigation satellite inter-satellite link test and evaluation system,which provides a new way of thinking for the field of navigation satellite status monitoring.