基于虚拟智能天线/Rake接收技术的室内北斗卫星信号处理方法研究

项目名称： 基于虚拟智能天线/Rake接收技术的室内北斗卫星信号处理方法研究

项目编号： No.61304234

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 自动化技术、计算机技术

项目作者： 丁继成

作者单位： 哈尔滨工程大学

项目金额： 25万元

中文摘要： 针对室内北斗卫星信号处理困难、不能完全满足导航与位置服务需求的矛盾，本课题结合智能天线抗干扰与Rake分集接收的增益获取优势，对单天线运动形成虚拟智能天线的2D-Rake室内北斗卫星信号处理技术展开研究。利用估计信号具有稀疏性的特点，探索基于独立分量分析的盲源分离技术，解决室内环境下北斗卫星信号波达方向的盲估计问题；研究基于子空间斜投影的波束形成方法，并建立以相关后载噪比为约束条件的阵列权值优化数学模型，提高阵列输出的信号质量；深入分析动态规划理论在北斗信号Rake处理环节的位同步适应性，研究基于动态规划理论和模糊控制渐消记忆自适应滤波理论相结合的信号跟踪技术，应对环境噪声的不确定性、解决接收机开机处于室内环境时的信号跟踪问题。本课题的提出源于现有技术无法满足实际应用需求的矛盾，课题的研究对卫星导航室内定位相关理论技术的发展具有重要意义，为促进导航与位置服务的进一步深化奠定理论基础。

中文关键词： 虚拟智能天线；独立分量分析；压缩感知；子空间斜投影；位同步跟踪器

英文摘要： Indoor Beidou satellite signal processing is very difficulty, and satellite navigation techniques can not meet the LBS needs at present. The Project, combined with smart antenna and Rake diversity reception technique, proposed an indoor BDS satellite signal processing scheme based on 2D-Rake which is from single-antenna movement forming virtual smart antenna. Using of signal sparsity characteristics, explored blind source separation techniques based on independent component analysis to complete the blind estimation of the Direction of Arrival(DOA) for indoor Beidou satellite singnal. Research on beamforming method based on sub-space oblique project,and modeling a relevant carrier to noise ratio to constraints weights optimized, improve the quality of the array output signal. Research on dynamic programming theory's adaptability when it is used in the BDS signal synchronization; study based on the theory of dynamic programming and fuzzy control fading memory adaptive filtering theory combined indeeply to complete signal tracking technology, it is to respond to environmental noise uncertainty and resolve signal reception problems when a receiver startup in the indoor environment. The subject come from the contradiction that existing technology can not meet the actual demand, these research works will be significan

英文关键词： virtual smart antenna；independent component analysis；compressive sense；subspace-oblique projection；bit synchronization tracker