摘要
由于卫星导航信号出现异常会降低导航系统的导航性能,因此对国际民航组织(ICAO)给出的导航信号畸变模型进行研究。建立了北斗测距码数模混合畸变模型,对其相关域和频域进行了仿真分析,并对S曲线锁定点偏差深入分析来研究北斗导航性能。仿真分析结果表明:测距码的数模混合畸变均使其相关峰和功率谱畸变,降低了北斗的导航性能,并对增强系统的完好性产生影响。
The navigation performance of Global Navigation Satellite System was affected by distortional signal. According to the ICAO research on navigation signal anomaly, the mathematical model for BeiDou's digital and analog mixed distortion was established. Then, the correlation domain and frequency domain were analyzed. Finally, in accordance with S-curve locking point bias of TMC, the impact on measurement performance was deeply analyzed. The simulation results demonstrate that the correlation peak and power spectrum were deformation, the navigation performance of BeiDou was reduced, and the integrity for augmentation system was influenced.
作者
刘瑞华
赵庆田
陈莹超
孔月明
LIU Ruihua;ZHAO Qingtian;CHEN Yingchao;KONG Yueming(School of Electronic and Information Engineering,Civil Aviation University of China,Tanjin 300300,China)
出处
《弹箭与制导学报》
CSCD
北大核心
2018年第3期168-172,共5页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
民航安全能力建设项目“北斗机载设备技术标准规定与应用研究”(AADSA0007)
中央高校基本科研业务费中国民航大学专项“基于北斗的通用航空指挥监控系统”(20001006)资助
关键词
TMC畸变模型
相关函数
功率谱
相关损耗
S曲线
threat model of TMC
correlation correlation function
power spectrum
correlation loss
S-curve
