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近空间飞行器载被动双站合成孔径雷达概念系统分析与设计

发表时间:2011-11-15  浏览量:1319  下载量:586
全部作者: 王文钦
作者单位: 电子科技大学通信与信息工程学院
摘 要: 近空间飞行器兼具卫星和航空飞机的优点,能提供类似卫星的宽覆盖、长续航能力和飞机的快速响应能力。针对该特点研究一种基于近空间飞行器平台的被动双站合成孔径雷达(synthetic aperture radar,SAR)成像方案。分析基于星载辐射源的近空间飞行器载被动双站SAR系统的工作模式、成像场景和接收天线尺寸等系统参数设计问题,并给出参数设计实例。为解决成像场景较小的问题,讨论一种基于数字面阵多波束接收的解决方案。该方法可以有效地扩大近空间飞行器载被动双站SAR的成像场景。
关 键 词: 地球科学其他学科;近空间飞行器;合成孔径雷达;被动雷达;双站合成孔径雷达;近空间
Title: Near-space vehicle-borne passive bistatic SAR conceptual system design and analysis
Author: WANG Wenqin
Organization: School of Communication and Information Engineering, University of Electronic Science and Technology of China
Abstract: Inspired by the advantages of near-space vehicles as a compare to satellites and airplanes including the wide coverage and long operation time like satellite and fast response like airplanes, this paper proposes the near-space vehicle-borne passive bistatic synthetic aperture radar (SAR) imaging approach. Using spaceborne illustrator as the transmitter, the corresponding passive bistatic SAR operation mode, imaged scene and system parameters are investigated, along with extensive design examples. One planar multibeam forming on receive-based approach is further proposed to resolve the problem of limited imaging scene. It shows that this approach can significantly extend the imaged scene.
Key words: other subjects of geoscience; near-space vehicle; synthetic aperture radar; passive radar; bistatic synthetic aperture radar; near-space
发表期数: 2011年11月第21期
引用格式: 王文钦. 近空间飞行器载被动双站合成孔径雷达概念系统分析与设计[J]. 中国科技论文在线精品论文,2011,4(21):1954-1959.
 
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