多视角聚束合成孔径雷达成像

	多视角聚束合成孔径雷达成像
	张云华
刊名	电波科学学报
	2007
卷号	22 期号:4 页码:577-582
关键词	聚束合成孔径雷达多视角观测空间虚拟探测技术波数域成像算法
ISSN号	1005-0388
其他题名	Multi-aspect imaging of spotl ight synthetic aperture radar
通讯作者	北京8701信箱
中文摘要	在介绍聚束合成孔径雷达高分辨率成像机理、其获得更高分辨率的难点所在、以及空间分辨率与观测空间频谱关系原理的基础上,提出利用多视角观测增加对目标的观测角,从而增加目标观测的空间频率范围,进而提高空间分辨率的思想.通过对每一视角观测采用波数域成像算法获得每次观测的频谱,利用空间频谱与空间域的对应关系进行频谱融合,对融合后的频谱进行逆傅立叶变换获得方位向分辨率提高的图像.计算机模拟验证了多视角聚束合成孔径雷达成像提高成像分辨率的有效性.
英文摘要	This paper described fir stly t he high2resolution imaging mechanism of Spotlight SAR,t he difficulties for it to obtain much higher resolution f urther , and al so the relation between spatial resolution and observed spatial spect rum,and then proposed an idea of synthesizing multi2aspect observations to increase total observation angle,i.e.to increase t he observation spect rum to achieve much higher resolution in spatial domain. Each observation’s spect rum was obtained wit h wavenumber domain imaging algorithm,and spect rums of all observations were fused in terms of t he relationship between space spect rum domain and space domain,finally target area image wit h improved resolution was achieved t hrough inver se Fourier t ransform. Computer simulations showed t he validity and effectiveness of the algorithm.
学科主题	微波遥感
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:2922592
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/2046]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	张云华. 多视角聚束合成孔径雷达成像[J]. 电波科学学报,2007,22(4):577-582.
APA	张云华.(2007).多视角聚束合成孔径雷达成像.电波科学学报,22(4),577-582.
MLA	张云华."多视角聚束合成孔径雷达成像".电波科学学报 22.4(2007):577-582.