Development of a Software-Based IF GPS Signal Simulator
Due to the flexible ability, research on software GPs receiver is now attracting more and more attention. In order to evaluate a software GPS receivers performance, there are two way to provide GPS signal. One is to use a set of real GPS signal measurements collected by a commercial front-end. The other way is to use software GPS signal simulator to generate digitized IF GPS signal. This paper develops a software-based IF GPS signal simulator for the LI C/a code signal. The design principles, implementation factors, and verification are described in this paper. Firstly, a mathematical signal model is developed, which includes various error source, such as satellite clock error, ionosphere error, and troposphere error. Then one channel structure of If GPS signal simulator represented one satellite is given. How to simulate the main modules in this structure is introduced. As the key point of IF GPs signal simulator, two iterative algorithms are introduced. Finally the simulator is verified by using a software GPS receiver.
Yongkang Hu Dongkai Yang Yiqiang Zhang Qishan Zhang
Beihang University, Beijing, 100191
国际会议
International Conference on Space Information Technology 2009(2009年第三届空间信息技术国际会议)
北京
英文
1-7
2009-11-26（万方平台首次上网日期，不代表论文的发表时间）