摘要: |
针对弹载条带合成孔径雷达(SAR)在末制导阶段由于波束覆盖范围窄和成像时间短,不易获
得所
要求的大面积图像的问题,提出了一种新的波束扫描方案,并根据导弹在末制导阶段的飞行
特点,结合子孔径处理方法,对波束扫描参数进行了理论分析和设计。仿真结果表明,与条
带SAR相比,该扫描SAR能有效地在较短的数据录取时间内获得大面积的SAR图像。 |
关键词: 弹载合成孔径雷达 宽域成像 子孔径处理 波束扫描 |
DOI: |
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基金项目:国家自然科学基金重点资助项目(10731050);教育部长江学者及
创新团队发展计划资助项目(IRT00742) |
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Design of Beam Scanning Parameter for Missile borne SAR Wide Area Imaging |
TANG Hai-yun,ZHAO Da-zhi,YANG Yong,LUO Mao-kang |
(College of Mathematics, Sichuan University, Chengdu 610065, China;Southwest China Institute of Electronic Technology, Chengdu 610036, China) |
Abstract: |
It is difficult for missileborne stripmap SAR to gain the required widespr
ead image in the terminal guidance because of narrow beam coverage and short ima
ging time.To solve the problem,a new scheme of beam scanning is proposed. And
beam scanning parameter is theoretically analysed and designed, according to th
e flight features of missile in the terminal guidance and combined with subapert
ure processing. The simulation result shows that the proposed scan SAR can effec
tively gain widespread image in the short time of rawdatarecording, compared
with stripmap SAR. |
Key words: missile borne SAR wide area imaging subaperture processing beam scanning |