面向新型信号体制的GNSS接收机基带关键技术研究

项目名称： 面向新型信号体制的GNSS接收机基带关键技术研究

项目编号： No.61271423

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 李金海

作者单位： 中国科学院微电子研究所

项目金额： 76万元

中文摘要： 新型卫星导航信号体制是卫星导航系统现代化的一大研究热点，相关核心技术的突破将进一步提高卫星导航系统的性能，拓宽卫星导航定位的应用领域，降低终端设备的开发和制造成本，带来巨大的社会效益和经济效益。本课题的研究目标是面向新型的BOC类信号（BOC(m,n), MBOC, AltBOC），深入研究适合该信号特性的相关引擎架构，并以此为基础研究相应的快速捕获和稳定跟踪算法，探索适合BOC类信号的实时GNSS定位技术。课题对基于扩展DLL算法的相关器组进行最优化研究，设计新的相关引擎以代替基于传统导航信号体制的相关引擎，保证了新型信号体制的优势，大大加快了信号捕获速度，提高了跟踪过程的稳定性。课题通过优化新型信号相关特性、改进捕获/跟踪引擎、建立自适应跟踪方案，最终突破面向新型信号的卫星导航接收机关键技术。

中文关键词： 二进制偏置载波调制；全球卫星导航系统；接收机；信号捕获；信号跟踪

英文摘要： The new satellite signal system is a hotspot of research in modernization of GNSS. The development of corresponding key technology will advance the performance of GNSS, extend the application field of navigation and positioning, reduce the cost of research and manufacture of terminal equipment, and bring huge social and economic benefit to people. The research goal of this project is that on the basis of BOCs (BOC(m,n), MBOC, AltBOC), we will deeply study the structure of correlation engine which fits BOCs, then study corresponding algorithm on fast acquisition and steady tracking, and search after real time GNSS technology fitting BOCs. Through the project, we will analyze the optimum performance of correlator group based on Extended DLL, design a novel correlation engine which can replace the old one fitting traditional signal system. As a result, the advantage of BOCs will be reserved, and the acquisition velocity can be increased greatly, while the stability of tracking could be strengthened. Meanwhile, the researchers would optimize the correlation characteristic of BOCs, modify acquisition/tracking engine, and found the self-adaptive tracking algorithm. The final purpose of us is acquire the key technology of GNSS receivers based on the novel signal of BOCs.

英文关键词： Binary Offset Carrier(BOC)；Global Navigation Satellite System(GNSS)；Receiver；Signal Acquisition；Signal Track