基于无线电干涉的跳频扩谱抗干扰导航定位技术

项目名称： 基于无线电干涉的跳频扩谱抗干扰导航定位技术

项目编号： No.61273047

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： 齐望东

作者单位： 中国人民解放军理工大学

项目金额： 81万元

中文摘要： 导航定位系统已成为关键信息基础设施。增强导航定位服务的抗干扰能力对保障军事和安全相关应用极其重要。跳频扩谱相比直接序列扩谱在抗干扰方面具有独特的优势，被广泛用于战术抗干扰通信。但是该技术从未被用于导航定位领域，因为快速跳频信号瞬时带宽窄、载波停留时间短，难以实现精确测距。本项目提出利用跳频信号实现导航定位系统抗干扰增强的新思路并提出基于拍频无线电干涉原理实现快速跳频信号精确测距的新方法。拍频无线电干涉本来是用于小范围无线传感器网络节点定位的新型测量技术。我们的预研提示将其与跳频信号体制相结合有望解决大范围精确测距难题。本项目研究构造跳频无线电干涉定位系统所涉及到的基本理论问题，研究内容包括三个方面：测距技术、信号复用方式和定位算法。研究目标是突破随机噪声和多径抑制关键技术，设计高效抗噪的测距和定位算法，提出可行的信号复用方式。项目研究成果将对增强导航定位服务的抗干扰能力提供新的技术途径。

中文关键词： 抗干扰技术；导航；定位；跳频扩谱；无线电干涉测量

英文摘要： Navigation and localization systems have become a vital information infrastructure. It is extremely important to enhance the anti-jamming capability of navigation and localization services for military and security applications. Frequency-hopping spread spectrum (FHSS) is superior to direct sequence spread spectrum (DSSS) in some aspects with regard to anti-jamming capability and is widely used in tactical anti-jamming communications. But its use in navigation and localization is thought to be out of the question since ranging with FHSS is very hard to achieve due to the narrow frequency bandwidth of FHSS in each hop and the short duration of each carrier. We put forward in this proposal a novel approach to anti-jamming navigation and localization with FHSS signal. To achieve precise ranging with fast FHSS, we propose to take advantage of beat radio interferometry, a new interferometric technique developed for node localization in wireless sensor networks spanning short distances. Our previous study indicates that beat radio interferometry can be used for ranging with nodes spanning much greater distances if we turn to the random-hopping frequencies readily available in FHSS. In this proposal, we focus on the investigation of three fundamental aspects of anti-jamming navigation and localization based on FHSS wit

英文关键词： anti-jamming techniques；navigation；localization；frequency-hopping spread spectrum；radio interferometry