摘要
针对转台模式的这场微波成像进行了深入研究。首先给出了转台模式下图像函数（描述目标的几何特征）与球投影的积分变换关系，并导出了图像函数的精确解。然后从线性系统的角度出发，研究了理想情况和实际情况下转台模式近场微波成像的分辨特性，理想情况下成像系统的点扩散函数（ＰＳＦ）就是狄拉克－函数。ＰＳＦ的数值模拟结果表明：实际情况下，扫描频带越宽分辨率越高。
Near-field microwave imaging for turntable mode is deacribed and analysed in datail.The integral trandformation between spherical projection and imaging function for turntable mode is Obtained,and the exact solution describing the gometrical signature Of object has been derived.Baed on the theory Of linear system,the imaging resolution both for ideal and practical cases is discussed It turns out that for ideal case the point spread function(PSF)of imaging system is Dirac function.
出处
《电波科学学报》
EI
CSCD
1996年第2期22-28,共7页
Chinese Journal of Radio Science
基金
国家自然科学基金
关键词
微波成像
近场成像
球投影
转台
分辨率
Microwave imaging,Near-field imaging,Spherical-projection,Turntable,Resolution
