项目名称: 数字阵列SAR同时多模式信号处理方法研究
项目编号: No.61301292
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 无线电电子学、电信技术
项目作者: 孙光才
作者单位: 西安电子科技大学
项目金额: 28万元
中文摘要: 数字阵列雷达具有传统意义上的雷达所无可比拟的优势,是目前世界各国正在努力研究和大力发展的新方向。结合数字阵列技术的合成孔径雷达(SAR),可以使SAR系统在灵活性、效率、探测能力等方面都有很大的提升,从而使SAR系统的应用范围和深度得到拓展。数字阵列SAR采用了收发直接数字化的方式,这使得可以直接通过软件编程的方式选择工作模式,而且多个模式可以同时工作。数字阵列SAR同时多模式系统不仅突破了常规的信号收发系统,更值得一提的是,它利用收发数字多波束形成突破单部雷达在同一时刻实现多功能的局限。由于数字阵列SAR在硬件结构和工作方式都与传统SAR系统不同,因此针对传统系统研究的处理算法也就不再适用了。因此,本项目主要研究数字阵列SAR同时多模式系统中涉及的阵列数字聚焦、同时多模式多路解耦成像和动目标检测成像等问题。该项目的研究将为数字阵列雷达的工程实现和应用研究提供一定的理论基础。
中文关键词: 雷达信号处理;数字阵列SAR;同时多模式;动目标成像;
英文摘要: Compared with traditional radar, the digital array radar (DAR) have the overcoming advantages. So, the DAR is studied worldwide and is a new direction. Combined with digital array technique, the synthetic aperture radar (SAR) system can be greatly improved in accuracy, efficiency and performance. In this case, the application of SAR can be extended widely and deeply. DAR utilizes direct digitalized transmitting and receiving techniques, and thus the working modes can be selected by using direct software building, and furthermore, multimode can work simultaneously. Digital array SAR with simultaneous multimode not only breakthrough the structure of the traditional signal transmitting and receiving system, but also overcome the limitation of multifunciton on a single radar. Due to the difference between traditonal SAR and digital array SAR in hardware and working mode, the signal processsing methods for traditional radar are not suitable any more. This project is to study the digital array focusing technique, simultaneous multimode imaging algorithms and moving target imaging in simultaneous multimode system. The expected fruits of this project will provide the theory foundation for implementation and application of digital array SAR.
英文关键词: Radar signal processing;Digital array SAR;Simultaneous multimode;Moving target imaging;