卫星定位软件接收机研究综述

Research progress of satellite positioning software receiver

软件接收机凭借其良好的通用性、灵活性及较好的定位性能已成为卫星定位接收机领域的一个研究热点。系统阐述了软件接收机的结构特点及国内外研究现状,对比分析了基于PC,DSP(digital signal processor),FPGA(field programmable gate array)以及FPGA+DSP平台的软件接收机的结构和性能,指出基于FPGA+DSP,DSP的实现方式更利于发挥软件接收机的优点,可使软件接收机真正走向实用化,最后给出了软件接收机技术未来的发展方向和其在无人驾驶技术中的应用前景,为软件接收机的研究和应用提供理论参考。

Software receiver has become a research hotspot in the satellite positioning receiver field because of its good universality,flexibility, and positioning performance. The structural features of software receiver and the current research status at home and abroad are formulated, and the structures and performance of PC-based, DSPCdigital signal processor)-based, FPGA (field programmable gate array)-based and FPGA+DSP-based software receivers are compared and analyzed. It is pointed out that the FPGA+DSP- and DSP-based implementation can better demonstrate the advantages of software receiver, and realize its real application. Finally, the development directions of software receiver in the future and its application prospect in unmanned driving technology are put forward. The paper can provide theoretical references for software receivers research and application.