宽带非连续有效频谱扩展自由度导航抗干扰技术

Based on the new system of global satellite navigation system, this project aims to study DOF extendtion anti-jamming technology for broadband discontinuous effective spectrum spread DOF navigation and make full use of the new system modulation signal characteristics and space-time frequency code. In this project, we will take the advantages of exploring new concepts of anti-jamming, mastering new principles, and proposing effective processing of new criteria, new methods, and new algorithms. The key scientific problems to be solved include anti-jamming processing of broadband discontinuous effective spectrum matching problems, low-bandwidth interference freeness in complex electromagnetic environment, and undersampling caused by missing space-time-frequency multi-dimensional information. And strive to achieve the innovative research results in the future, which is based on the anti-jamming optimization criterion of the broadband non-continuous spectrum satellite navigation signal, the array anti-interference degree of freedom expansion method, the multi-dimensional domain sparse navigation anti-jamming method. This project will lay the theoretical foundation to enhance the satellite navigation system receiver's anti-jamming capability with key technical support.

本项目拟以复杂电磁环境下全球卫星导航系统新体制、多系统为背景，开展宽带非连续有效频谱扩展自由度导航抗干扰技术研究，充分利用新体制调制信号特性和空时频码多维域联合处理的优势，探索抗干扰处理新概念，掌握新原理，提出有效的处理新准则、新方法、新算法。拟解决的关键科学问题包括抗干扰处理宽带非连续有效频谱匹配问题、复杂电磁环境下抗宽带干扰自由度受限问题以及空时频码多维域信息缺失导致的欠采样问题。力求在宽带非连续有效频谱卫星导航信号抗干扰优化准则、突破阵元数限制的阵列抗干扰自由度扩展方法、多维域联合稀疏的导航抗干扰处理方法等方面取得创新性研究成果，为我国未来全球卫星导航系统接收机奠定理论基础，提升卫星导航系统接收机的抗压制式干扰性能，使我国未来具备强抗干扰能力的新体制导航系统具备关键技术支撑。

本项目以复杂电磁环境下全球卫星导航系统新体制、多系统为背景，开展了宽带非连续有效频谱扩展自由度导航抗干扰技术研究，充分利用新体制调制信号特性和空时频码多维域联合处理的优势，探索了抗干扰处理新概念，掌握新原理，提出有效的处理新准则、新方法、新算法。重点解决了抗干扰处理宽带非连续有效频谱匹配、复杂电磁环境下抗宽带干扰自由度受限以及空时频码多维域信息缺失导致的欠采样等关键科学问题。在宽带非连续有效频谱卫星导航信号抗干扰优化准则、突破阵元数限制的阵列抗干扰自由度扩展方法、多维域联合稀疏的导航抗干扰处理方法等方面取得创新性研究成果。本项目的部分研究成果已应用于我国某重点型号卫星导航抗干扰接收机，取得了良好的效果。本项目在国内外重要刊物和会议上发表研究论文26篇，其中SCI检索17篇、EI检索9篇。获国防科技进步一等奖1项，成果鉴定1项，受理专利18项。