说明：  ：研究了全球定位系统接收机的实现原理，给出了简单的数学模型， 并针对GPS接收机的关键模块，包括码元的捕获和跟踪、载波跟踪、数据提取等，利 用Matlab进行了仿真，给出了仿真结果。这对于关键模块的工程实现具有一定的参 考价值。
(: The Global Positioning System receivers realize principle, given a simple mathematical model, and the key for GPS receiver module, including the key element of the capture and tracking, carrier tracking, data extraction, etc., using Matlab simulation, simulation results. This is the key module of the project to achieve a certain reference value.)