LORAN－C台链信号仿真的实现

The Realization of SimulatedLORAN--C Chain Signals

根据检测ＬＯＲＡＮ－Ｃ接收机性能必须用仿真的ＬＯＲＡＮ－Ｃ台链信号做信号源的需要，设计了一套实现台链信号仿真的方案。通过仿真台链信号核心的ＬＯＲＡＮ－Ｃ脉冲的产生方法，提出了用模拟方法和数字方法产生ＬＯＲＡＮ－Ｃ脉冲的两种方案，并对两种方案的优缺点及应用场合进行了分析，对模拟方法做了理论探讨。文中还阐述了台链地波信号、天波干扰、交叉台链于扰与限带白噪声等的产生方法，以及如何在模拟接收机载体运动时产生仿真的台链信号方法。

This paper presents the design and realization of simulated LORAN-C chain signals which are used in testing the performance of LORAN-C receivers.It also describes in detail the analog and digital methods used to generate LORAN-C pulse which is the basic component of LORAN-C chain signals and the theory analysis to analog method. Moreover,thc design for generating ground-wave signals,sky-wave interference,cross-rate chain interference and limited-band white noise is given.