高精度卫星导航接收机空时抗干扰技术研究

项目名称： 高精度卫星导航接收机空时抗干扰技术研究

项目编号： No.61201257

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 郭艺

作者单位： 中国人民解放军61081部队

项目金额： 25万元

中文摘要： 基于天线阵列的卫星导航接收机空时抗干扰技术是因其具有良好的抗干扰性能而获得广泛研究与应用。但对于高精度接收机，空时抗干扰技术的应用还面临诸多问题亟待解决。本项目拟先提出基于最大载噪比的最优空时抗干扰准则，解决基于最大信噪比准则带来的信号损失；接着拟利用循环平稳特性来精确估计卫星导航信号特别是BOC类信号的DOA，进一步提高抗强干扰接收效果；针对多径干扰拟提出新的基于天线阵列的空时抑制方法；针对天线阵列误差和空时处理对高精度接收机码相位、载波相位造成偏差的严重问题，拟提出利用接收天线阵列的校正信息、权值信息精确估计相位偏差，并进行实时补偿的方法；在上述研究基础上，拟提出基于认知的卫星导航接收机抗干扰方法以提高抗干扰效率。高精度卫星导航接收机空时抗干扰技术的研究，将有效提高接收机的精度、抗干扰性能和实用性，同时完善和发展空时抗干扰理论，为高精度卫星导航接收机抗干扰研究提供新的思路和理论依据。

中文关键词： 卫星导航接收机；空时抗干扰；天线阵列；多径；测试方法

英文摘要： The space-time interference suppression technology based on antenna array is currently the hot issue in the field of satellite navigation receiver, it is more and more widely used because of its excellent anti-jamming performance. While there are many problems for high-precision receiver used space-time anti-jamming technology. Our project aims to study and resolve these issues. The impacts of the antenna array processing are analyzed for code tracking and carrier tracking. The method is proposed that real-time compensation by finding out antenna array weights and estimating signal loss. We propose an optimal space-time anti-jamming criteria based on the maximum carrier to noise ratio. It can resolve the signal loss of other criterias. The DOA of satellite navigation can be accurately estimated using cyclo-stationary features, and anti-jamming reception is further improved. The effective multipath interference detection and suppression method is proposed by space-time filtering. The cognitive receiver anti-jamming method is proposed for improve the efficiency. By studying space-time interference suppression method of high-precision satellite navigation receiver, the accuracy, anti-jamming performance and practicality will be effectively improved. At the same time, the space-time interference suppression theory w

英文关键词： GNSS receiver；space-time interference suppression；antenna array；multipath；testing method