GNSS接收系统在高动态环境下的干扰抑制技术研究

项目名称： GNSS接收系统在高动态环境下的干扰抑制技术研究

项目编号： No.61273053

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 自动化技术、计算机技术

项目作者： 郑建生

作者单位： 武汉大学

项目金额： 60万元

中文摘要： 如何在高动态环境下有效抑制干扰，保证GNSS接收系统的可用性，是卫星导航系统在军事应用中亟待解决的关键技术难题。本项目提出从"系统级"解决高动态下卫星导航系统的干扰抑制问题，主要研究内容包括以下三个方面1）建立高动态环境下的干扰模型，确定干扰与信号特征变化的对应关系，提取用于识别干扰的特征参数，为实现导航接收机对干扰环境的自主性监测和干扰抑制性能的评判提供理论依据；2）利用空频自适应处理和快速并行捕获的关系，将干扰抑制模块与接收系统的捕获跟踪统一考虑，从系统级提高干扰抑制方法的处理速度，满足高动态要求。3）建立跟踪环路和天线阵列的组合模型，研究天线阵列在不同组合方式下的处理性能和代价，寻找合适的组合模式保证抗干扰系统在不同的处理阶段均具有良好的干扰抑制性能，形成一套有效的干扰抑制平台。本项目将为实现满足国防等领域的GNSS接收系统提供理论依据和验证平台。

中文关键词： 高动态；抗干扰；信干噪比；波达角；压缩感知

英文摘要： It's a key technical problem to suppress interferences and keep Global Navigation Satellite System receivers available in high-dynamic circumstances. This project puts forward to solve the interference problem in high-dynamic circumstances from "system-level". The main research contents are as following: First, interference in the dynamic circumstance will be modeled, the relation between interference and varying quantity in navigation signal characteristics will be ascertained, and the characteristic parameters will be extracted to monitor interference circumstances. These technologies will provide theory basis for interference circumstance monitoring and interference suppression performances. Second, using the relation between Space Frequency Adaptive Processing and rapid parallel acquisition, the processing speed will be improved from system-level and can well meet dynamic demands. Last, the model which combine the antenna array processing and the track loop will be build, and the processing performance and cost will be evaluated, and the best combine model will be extracted to ensure interference suppression performance at different stage and to build a effective interference suppression platform. This project will provide theory basis and assessment platform for interference anti-jamming GNSS receiving syst

英文关键词： High Dynamic；Anti-jamming；Signal to Interference and Noise Ratio；Direction of Arrial；Compressed sensing