CAJ | 학술논문

北斗卫星中频信号在精确导航与授时、合成孔径成像等方面起着关键作用。通过对北斗卫星导航信号的特征进行分析，建立了北斗卫星中频信号的数学模型，并对该模型进行了仿真实现，进而研究了中频信号中路径延迟、噪声和多径干扰对原始北斗信号的影响。研究得到的信号数据可以为导航接收机和信号处理模块提供不同采样率的信号源码，通过这样的方法可以减少大量现场试验，缩短研发时间、降低成本。
북두위성중빈신호재정학도항여수시、합성공경성상등방면기착관건작용。통과대북두위성도항신호적특정진행분석，건립료북두위성중빈신호적수학모형，병대해모형진행료방진실현，진이연구료중빈신호중로경연지、조성화다경간우대원시북두신호적영향。연구득도적신호수거가이위도항접수궤화신호처리모괴제공불동채양솔적신호원마，통과저양적방법가이감소대량현장시험，축단연발시간、강저성본。
The BEIDOU satellite navigation guiding and positioning system intermediate-frequency (IF) signal plays a crucial role in aspects such as pinpoint navigation, timing service, synthetic aperture imaging and so on. By analyzing the characteristic of the BEIDOU satellite navigation guiding and positioning system IF signal, a mathematical model was established. Then the model was simulated to explore influence caused by the path de-lay, the noise and the multipath interference. The signal data obtained by simulation could be used to offer the signal source in different sampling, which was necessary in the navigation receiver and the signal processing module. In this way, a large number of field tests could be reduced, so both the time and the cost could be saved.