GNSS导航卫星抛物面天线系统建设与测试

Construction and Test of GNSS Navigation Satellite Dish Antenna

摘要:

导航卫星的信号质量是影响卫星导航系统精度、连续性和可靠性的关键因素,为实时监测上海地区可见GNSS导航卫星的信号质量,建成了GNSS导航卫星抛物面天线系统;该系统可以对包括北斗导航卫星系统在内的GNSS导航卫星的空间信号进行监测,分析导航卫星空间信号的质量;GNSS导航卫星抛物面天线系统主要由3.2m抛物面伺服跟踪天线、GNSS信号中频采集器、数据存储装置、监测控制平台以及相关监测设备组成;介绍了导航卫星抛物面天线系统的建设及其测试情况,测试结果表明,所建成的抛物面天线系统可以对观测范围内的各卫星导航系统的各颗卫星的导航信号进行实时信号跟踪与监测,相关技术指标达到了预期要求。

Abstract:

Signal quality of navigation satellite is a significant factor to accuracy, continuity and reliability of satellite navigation system, to monitor the signal quality of GNSS navigation satellites that can be observed in Shanghai, GNSS navigation satellite dish antenna was constructed which can monitor GNSS navigation satellite in-space signal and analyze navigation satellite signal quality. GNSS navigation satellite dish antenna is constituted of 3.2 m parabolic antenna, GNSS signal intermediate frequency sampler, data storage device, control segment and related monitoring instruments. Construction and test conditions of this GNSS navigation satellite dish antenna are introduced, and the test results demonstrate that the GNSS dish antenna can monitor all navigation satellites in view including GPS, BDS, Galileo and GLONASS satellites, and its performance is satisfactory when comparing with design parameters.