单发多收天线雷达低空目标检测方法研究

项目名称： 单发多收天线雷达低空目标检测方法研究

项目编号： No.61501475

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 杨勇

作者单位： 中国人民解放军国防科技大学

项目金额： 20万元

中文摘要： 雷达低空目标检测是雷达预警、监视领域的热难点问题。雷达在检测低空目标时，同时面临着强杂波和多径散射双重干扰，而目前，同时考虑杂波与多径散射，研究雷达低空目标检测方法的相关工作尚未见公开报道。本项目以提高雷达低空目标检测性能为目的，从“特性分析与建模-影响机理与效果分析-检测方法研究”三个层面研究雷达低空目标检测涉及的相关问题。首先，对杂波与多径散射特性进行分析与建模，为后续影响机理与效果分析、检测方法研究提供数学模型与仿真数据支撑；然后，分析杂波+多径散射条件下雷达低空目标检测性能，揭示杂波+多径散射对雷达检测的影响实质和影响效果，为检测方法研究提供思想源泉；最后，基于单发多收体制，研究单发多收天线雷达低空目标检测方法，提高雷达低空目标检测性能。项目预期研究成果可为低空预警、监视雷达系统研制、设计与应用提供重要的理论指导。

中文关键词： 雷达目标；目标检测

英文摘要： Detection of the low altitude target is a popular issue for radar early warning and surveillance. Radar encounters the interference of fierce clutter and multipath when detecting the low altitude target. However, study on the radar detection method for low altitude target by taking both clutter and multipath into account has somewhat elusive thus far. Aiming at enhancing the radar detection performance for low altitude target, this project investigates correlated issues on radar detection of low altitude targets in three aspects. The three aspects respectively are characteristics analysis and modeling, analysis of the influence mechanism and effect, detection methods investigation. In more detail, characteristics of the clutter and multipath is analyzed and modeled at first in this project, which can provide the mathematical model and simulated data for the analysis of influence mechanism and effect and detection methods investigation respectively. Then radar detection performance for low altitude target in clutter plus multipath environment is analyzed, and influence of clutter plus multipath on radar detection is presented. This provides significant reference for the radar detection methods investigation. Finally, radar detection methods for the low altitude target based on the single transmitting and multiple receiving antennas are proposed to enhance radar detection performance. The desirable research results of this project will provides significant guidance for the development, design and application of early warning and surveillance radar systems.

英文关键词： radar target;target detection