Narrowband imaging method for spatial precession cone-shaped targets

来源 :Science China(Technological Sciences) | 被引量 : 0次 | 上传用户:geshufa
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The imaging method of the mid-course missile is the key technique of the missile defense system.Because of the special precession character of the ballistic missile warhead,the inverse synthetic aperture radar method cannot realize phase compensation with the constant phase offset function,which leads to blurring of the image.In this paper,we propose a new narrowband radar imaging method for the precession cone-shaped targets.The method acquires the Doppler modulation of the precession target’s scattering centers with high resolution time-frequency analysis method and extracts the Doppler parameter from the result of the time-frequency analysis with the general Radon transform,then reconstructs the scattering centers positions in the parameter domain.The experiment results with the anechoic chamber data of the representative cone-shaped object showed the effectiveness of the method. The imaging method of the mid-course missile is the key technique of the missile defense system. Because of the special precession character of the ballistic missile warhead, the inverse synthetic aperture radar method can not realize phase compensation with the constant phase offset function, which leads to blurring of the image. This paper, we propose a new narrowband radar imaging method for the precession cone-shaped targets. The method acquires the Doppler modulation of the precession target’s scattering centers with high resolution time-frequency analysis method and extracts the Doppler parameter from the result of the time-frequency analysis with the general Radon transform, then reconstructs the scattering center positions in the parameter domain. The experiment results with the anechoic chamber data of the representative cone-shaped object showed the effectiveness of the method.
其他文献
6月21日,贝塔斯曼集团董事会主席兼CEO冈特·蒂伦到访北京,在与媒体座谈中,他提到转型问题:“我们也在考虑开拓电子学习(E-Learning)的出版模式。” June 21, Bertelsmann G
《秋泓》杂志由共青团吉林大学研究生院委员会主办,著名诗人公木先生为《秋泓》题写刊名,取“秋,成熟之季节,泓,水深且远”之意。自创刊以来,《秋泓》一 “Autumn Hong” ma
航母从诞生之日起,就存在诸多致命的弱点。即便是当今最先进的大型核动力航母,在特定环境下也有可能像“缓慢移动的靶标”般脆弱。 Aircraft carrier from the date of birt
尽管不是一个新话题,但近年来,社会上关于核心期刊的种种讨论却始终保持着相当的热度。近日,《中国青年报》关于《商场现代化》借“核心期刊”之名敛财的报道,再次让核心期刊成为社会关注的焦点。核心期刊的本来面目是怎样的?又是谁把核心期刊这本经念歪了?  1931年,著名文献学家布拉德福首先揭示了文献集中与分散规律,发现某时期某学科1/3的论文刊登在3.2%的期刊上;1967年,联合国教科文组织研究发现75
Nickel liner of shaped charge with nano-sized grains was prepared by electroforming technique and the ultra-highstrain-rate deformation was performed by explosi
人类文明的发展,越来越显示出知识分子的作用。因此,我认为,中华要振兴,社会要前进,就要为知识分子提供一个交流新思想、传播新知识的平台。我退下来以后,强烈地感到知识分子
行外说,中国文学大刊主编前瞻而高迈,谁知他们超常的体力透支和心理重负。时下日趋边缘的文学园地,正是由于他们的坚挺与固守依旧,才依旧长满繁花绿树。他们是作家,更是编辑
Best-selling author J.K.Rowling will appear in a rare interview on“The Oprah Winfrey Show”to talk about her life and career and the possibility of another Har
来信尊敬的编辑同志:最近,我读到发表在2009年第6期《随笔》上的一篇文章:《大清王朝的一再挨打》(作者张耀杰,见复印件),它以推荐女作家端木赐香关于中国近代史上两次鸦片战
扁平疣是临床常见的病毒性皮肤病,好发于面部、手背,呈多发性,影响美观,治疗比较棘手,笔者采用异维A酸胶丸联合阿达帕林凝胶治疗扁平疣96例,取得满意效果,现报告如下。1资料