摘要
分析S频段导航信号与临频信号的兼容性,设计了实际场景下S频段导航信号干扰检测方法和干扰源识别方法。利用在轨卫星播发的S频段导航信号,通过多种场景的测试比对,评估蜂窝通信4G信号和WLAN信号两个临频信号对S频段导航信号的影响程度。测试结果显示,2555MHz^2575MHz频段的4G信号对S频段导航信号存在较为明显的干扰,在当前设计状态下,S频段4G基站以及导航终端还需要进一步研究信号兼容手段,保障S导航频段能够安全使用。
Compatibility of S-band GNSS signal and its adjacent band signals is analyzed based on field test method. S-band GNSS signal interference detection and source identification methods are designed in this test. By using the actual S-band GNSS signal broadcast in Bei Dou system satellites in orbit, the influences of the two adjacent signals which are 4G cellular mobile communication signal and WLAN signal on S-band GNSS signal are analyzed in various scenarios. The results show that, 4G signal in band 2555 MHz-2575 MHz has obvious interference on S-band GNSS signal, which may cause 10 dB degradation in carrier to noise density ratio.
作者
楚恒林
高扬
陆明泉
Chu Henglin;Gao Yang;Lu Mingquan(Tsinghua University, Beijing 100092, China;Beijing Satellite Navigation Center, Beijing 100094, China)
出处
《遥测遥控》
2018年第3期1-7,共7页
Journal of Telemetry,Tracking and Command
基金
国家自然科学基金重点项目(91638203)(基于少量地面控制源的多层高动态空间信息网的时空基准研究)
