复杂场景下双基地MIMO雷达检测地面慢速目标的收发空时自适应处理方法研究

项目名称： 复杂场景下双基地MIMO雷达检测地面慢速目标的收发空时自适应处理方法研究

项目编号： No.61271292

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 李军

作者单位： 西安电子科技大学

项目金额： 60万元

中文摘要： 双基地雷达具有探测隐身目标、隐蔽侦查等诸多优势，但传统双基地研究中，对发射端信息的获取和利用不是很充分。本项目不同于仅对接收信号进行空时自适应处理的传统方法，拟利用多入多出（MIMO）雷达提供的收发空域自由度进行收发联合空时自适应处理。从接收信号中获取双基地雷达目标和杂波相对于发射端的空间信息，并结合先验知识和复杂场景的统计特性，自适应调节发射波形参数，从而在传统空时两维自适应处理中加入发射空间和发射波形处理，降低由双基地构形和复杂的实际地面环境引起的杂波训练样本非独立同分布的影响，改善系统消除杂波的能力，提高复杂环境下双基地雷达对慢速小目标检测性能，为复杂环境下双基地雷达地面动目标检测的实用提供理论基础。

中文关键词： 双基地多入多出雷达；空时自适应处理；自适应波形优化；先验知识；非独立同分布杂波

英文摘要： Bistatic radar systems have several advantages, such as anti-stealth, covert operation. However, the advantages of transmit information of bistatic radar are not fully explored. In this project, the transmit spatial degree of freedoms (DoFs) which are provided by multiple-input multiple output (MIMO) radar will be exploited to achieve transmit-receive space-time adaptive processing (STAP). This kind of processing is different from traditional STAP which only uses the information at receive side. The transmit spatial information can be extracted from the receive data and the transmit waveforms can be adjusted adaptively with the aid of prior knowledge and statistical characteristic of environment. So the information from the tansmit spatial and the waveforms are merged into the traditional STAP, which results to the reduction of the independent non-identically distributed characteristic of clutter caused by bistatic geometry and complex environments. Furthermore, the ability of clutter suppression of radar systems is improved and the performances of slow moving targets detection in complex environments are upgraded. The research results in this project will provide some theory basis for ground moving target indicator (GMTI) using bistatic MIMO radar.

英文关键词： bistatic MIMO radar；space-time adaptive processing；adaptive waveform optimization；prior knowledge；independent non-identicically distributed clutter