GPS接收机的迭代处理技术研究

导航接收机系统作为一种卫星导航系统的终端接收,在军事和民用方面都得到重大应用。高精确定位性能是导航接收机应用追求的目标。针对导航接收机工作环境各种复杂干扰,及为进一步提高导航接收机系统的抗干扰性能,提出了一种迭代处理技术的应用方案,并对方案可行性进行分析研究。通过应用迭代处理,在接收混合信号中消除了干扰信号影响,使得捕获跟踪精度提高以此提高GPS接收机的性能。理论分析和仿真结果表明,在GPS接收机中引入迭代处理技术能很好的提高系统抗干扰能力,干扰抑制效果更好。

Study on Iterative Processing Technology of GPS Receiver

Navigation receiver system, as a terminal for receiving, plays an important role in the military and civilian fields, while the high-precision positioning performance is a goal pursued by the application of navigation receivers. In order to improve the anti-interference performance of navigation receiver system, an applications scheme of iterative processing technology is proposed and analyzed. Through the application of iterative processing, the interference impact of the mixed signal at the receiver is eliminated, thus enhancing the capture and tracking precision and raising the performance of GPS receiver. The simulation results show that, by introducing iterative processing into GPS receiver, the anti-interference ability of the system could be improved, and a better result of interference suppression achieved.