高超声速飞行器载雷达运动目标检测方法研究

项目名称： 高超声速飞行器载雷达运动目标检测方法研究

项目编号： No.61301282

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： 谢荣

作者单位： 西安电子科技大学

项目金额： 24万元

中文摘要： 高超声速飞行器载雷达具有广阔的应用前景，但它在下视工作时面临的杂波谱同时存在距离非平稳、距离多普勒模糊和距离走动等问题，加上平台与目标和杂波间的相对运动速度高机动性大、目标回波能量弱，使得杂波抑制和目标检测相比于机载雷达更加困难。本项目将围绕高超声速飞行器载雷达动目标检测在信号处理方面的关键问题，重点研究：（1）抑制模糊的波形设计方法；（2）存在距离非平稳性、距离多普勒模糊和距离走动的杂波抑制方法；（3）同时实现杂波抑制和目标信号相干积累方法。本项目组已具备丰富的相关研究积累，能直接抓住问题的关键进行深入研究，可为实现高超声速飞行器载雷达动目标检测提供算法基础。

中文关键词： 杂波抑制；空时自适应处理；波形设计；相干积累；高超声速飞行器

英文摘要： Hypersonic airborne radar has broad application prospects, but during downward-looking the clutter spectrum should face the problems of range dependence of clutter signal, both range and Doppler unambiguity and range migration. Besides, the relative mobility between the platform and the target and the clutter of high velocity and maneuverability, the target echo energy is weak, making it more difficult for the clutter suppression and target detection compared to the airborne radar. Here, we need to resolve the problem of signal processing in hypersonic airborne radar moving target detection. In details, we research the following problems: (1) the research of waveform design for minimizing the unambiguity; (2) the algorithm of clutter suppression for the clutter with range dependence of clutter signal, both range and Doppler unambiguity and range migration; (3) the method of simultaneously achieving clutter suppression and coherent accumulation. Our group has the abundant experience of the correlative research field. The research problems are innovatory and practicable, which will provide the fundamental algorithms for the hypersonic airborne radar moving target detection.

英文关键词： clutter suppression；space-time adaptive processing；waveform design；coherent accumulation；hypersonic vehicle