| 摘要: |
| 在对中频GPS信号理论建模与分析的基础上,采用Matlab/Simulink构建了一种精确的数字中频GPS信号软件模拟器,考虑了噪声、欠采样以及接收机时钟误差等的影响.软件模拟器的实现采用Matlab代码编程与Simulink模型混合的方式,方便了不同算法的实现.与传统的GPS信号模拟器相比,文中设计的软件模拟器具备设计灵活、可扩展、易于使用等诸多优点. |
| 关键词: GPS信号 软件模拟器 欠采样 自动增益控制 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:June 30, 2006Revised:August 29, 2006 |
| 基金项目:杨志专（1983-）.男,硕士,研究方向为卫星导航定位与扩频通信,（电话）027-87544261（电子信箱）yzzhust@126.com. |
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| Design of a Software Simulator for Digitized IF GPS Signals |
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| Abstract: |
| Based on the theoretic modeling and analysis of the IF CPS signals, an accurate software simulator of IF GPS signals is implemented in Matlab/Simulink, the effects of noise, under - sampling and receiver clock error are also simulated. Convenient for the realization of different algorithms, the software simulator is implemented by combining Matlab code with Simulink models. Compared to conventional GPS signal simulators, this software simulator has many advantages, such as nimble design, flexible extending and easy -to -use. |
| Key words: GPS signal software simulator under - sampling AGC |
