【摘要】 全球定位系统(Global Positioning System,GPS)是一种基于卫星的定位系统,向全球范围内的用户全天候提供高精度的导航、定位和授时服务。GPS系统的测距码可以分为粗码(C/A码)和精码(P码),其中C/A码用于民用导航。本文在深入研究C/A码信号生成原理的基础上,利用Matlab对C/A码信号的实现方式进行了仿真实现和分析。仿真结果进一步证实了该方法的正确性和可行性。这对在仿真平台上进一步研究真实环境下的GPS信号,使其能捕获跟踪复杂环境下的卫星信号,改进卫星接收部分的性能有着十分重要的实际意义。更多还原

【Abstract】 Global Positioning System (Global Positioning System, GPS)is a satellite-based positioning system, within the scope of global users to provide round-the-clock high-precision navigation, positioning and timing services. Ranging Code GPS system can be divided into rough code (C/A code) and the fine code (P code), C/A code used for civil navigation. Based on in-depth study C/A code signals generated on the basis of principle, the use of Matlab C/A code signals in the form of the realization of Simulation and analysis. Simulation results further confirm the validity of the method and feasibility of this simulation platform in the real environment further study the GPS signal, enabling it to capture complex environment tracking the satellite signal, improve the performance of satellite receiver has a very important part practical significance.更多还原