卫星导航星地对接模型系统的设计与实现

随着GPS、GLONASS、GALILEO等导航系统的建设,各种导航定位系统的卫星功能越来越强大,其性能也越来越受到重视和关心。在卫星发射之前,如何进行卫星的测试与试验,是必须面临的问题。建立一套星地对接模型系统,模拟仿真真实地面设备的导航信号环境,与卫星进行星地对接试验,对卫星进行功能检查和性能检验,是解决这一问题的有效途径。介绍了星地对接模型系统的工作原理设计和信号的模拟要求,详细阐述了星地对接模型系统各种特征的实现途径,并对模拟信号进行了系统实现。

Design and Implementation of Satellite Navigation Modeling System to Conduct Compatibility Test between Ground Station and Satellite

With the development of the GPS, GLONASS and GALILEO navigation system, the performance of each satellite in navigation systems is being improved as time goes by. Before launching the satellite, how to conduct the tests and experiments of the satellite is the problem that we have to face up. There is an effective path to solve the problem, that is to set up a set of modeling system to conduct the compatibility test between the ground station and the satellite, simulate and emulate the genuine navigation signal environment of the ground station equipment, conduct experiments of compatibility test between the ground stations and the satellites and to conduct the functional inspection and performance verification. The article introduces the theory and design of the modeiing system which conducts the compatibility test between the ground station and the satellite, and provides the simulating requirements for the signal, and also thoroughly discusses the methods of implementing every characteristic of the modeling system, finally, it introduces the system implementation of the simulated signals.