窄带相参雷达非刚性编队目标架次分辨研究  

Sorties Determination for Targets with Non-rigid-structure via Narrowband Coherent Radar

作　　者：彭石宝[1] 许稼[2] 向家彬[1] 彭应宁[2] 

机构地区：[1]空军雷达学院雷达成像中心,武汉430019 [2]清华大学电子工程系,北京100084

出　　处：《现代雷达》2011年第3期24-28,共5页Modern Radar

基　　金：国家自然科学基金(60971087);航天科技重点创新基金(CASC200904);航空科学基金(20080158001);部委科研项目(KJ05131)

摘　　要：针对窄带相参雷达,文中在对目标进行长时间观测的基础上,深入研究非刚性编队架次分辨的原理。建立了多目标的统一模型,分析了非刚性编队目标的回波多普勒组成,提出了公转多普勒、径向多普勒和调频多普勒等新概念。进而,指出公转多普勒和径向多普勒的和决定了目标时频曲线起点,调频多普勒决定了目标时频曲线的走势。而目标间频率起点和时频曲线走势的差别构成了编队架次分辨的基础,而时频分析则是实现分辨的有效手段。最后,仿真和实测的实验结果证明了文中结论的正确性。The sorties determination principle is discussed for narrowband coherent radar targets with non-rigid-structure based on a long coherent integration time in this paper. Firstly a novel signal model is proposed and some new concepts are put forward, such as common rotation Doppler, radial Doppler, chirp Doppler. And then it is pointed out that the initial frequency of target time-fre- quency distribution is decided by the sum of common rotation Doppler and radial Doppler, the trend is decided by chirp Doppler. Accordingly, targets can be discriminated from each other based on the difference of initial frequency and frequency trend. Finally, the effectiveness of the proposed method is verified by the simulated data and the real aiwraft data.

关 键 词：窄带相参雷达 刚性编队目标 时频分析 架次分辨 

分 类 号：TN974[电子电信—信号与信息处理]