弹载雷达微波关联前视成像信号建模与算法研究

项目名称： 弹载雷达微波关联前视成像信号建模与算法研究

项目编号： No.61471283

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 李亚超

作者单位： 西安电子科技大学

项目金额： 81万元

中文摘要： 弹载雷达前视成像是当前国内外研究的热点和难点，是实现导弹自主寻的精确制导亟需解决的关键问题之一。由于受到多普勒带宽和大孔径阵列的限制，传统的高分辨SAR和实孔径等成像体制不再适用于弹载平台的雷达前视成像。因此，为了突破这些限制，本项目在分析微波关联成像的特点和优势的基础上，创新地提出了弹载雷达微波关联前视成像的新模式，利用多通道阵列产生的空时二维随机辐射场，结合贝叶斯统计模型和压缩感知等先进的信号处理方法，通过关联处理技术，实现弹载雷达对目标的高分辨前视成像。考虑到弹载平台高速机动给雷达前视成像带来的新问题，本项目主要研究：1）基于空时二维随机性表征的弹载雷达前视成像信号建模；2）复杂条件下静态目标的弹载雷达前视成像；3）三维运动目标的弹载雷达前视成像。可见，弹载雷达微波关联前视成像是一个全新的课题，为弹载平台雷达导引头新技术的发展提供了一个崭新的思路,具有非常重要的研究意义和实用价值。

中文关键词： 微波雷达成像；弹载雷达前视成像；微波关联技术；贝叶斯统计模型；压缩感知

英文摘要： As the focus of the research on radar imaging in the wide world nowadays, missile-borne radar forward-looking imaging is the key difficulty needed to be resolved to implement active homing precision guidance. Limited by the Doppler bandwidth and wide aperture array, traditional imaging systems such as high-resolution SAR and real-aperture radar cannot adapt to radar forward-looking imaging in missile-borne platform. Therefore, to break through these limitations, this project proposes a new microwave correlated forward-looking imaging mode of missile-borne radar based on the analysis of the characteristics and advantages of microwave correlated imaging. By using space-time random radiation field produced by multi-channel array, combining such advanced signal processing approaches as Bayesian statistic mode and compressive sensing, and taking advantage of correlated processing technology, this project can achieve high-resolution forward-looking imaging of missile-borne radar. Considering some new problems in radar forward-looking imaging introduced by high velocity in missile platform, this project focuses on the following aspects: 1) Establishment of missile-borne radar imaging signal model; 2) Missile-borne radar forward-looking imaging of stationary targets in complex conditions; 3) missile-borne radar forward-looking imaging of three-dimensional moving targets. As such, microwave correlated forward-looking imaging of missile-borne radar is a fire-new project, which can bring about new solutions to the development of radar guidance in missile-borne platform, and thus has very important research meaning and practical value.

英文关键词： microwave imaging;forward-looking imaging of missile-borne radar;microwave correlated technology;Bayesian statistical model;compressive sensing