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Alternative TitleResolution and Radiometric Sensitivity Analysis of the Rotating Synthetic Aperture Radiometer Based on Filtered Back Projection Algorithm
孙逢林; 张升伟; 刘浩; 张成
Source Publication电子与信息学报
Keyword自旋式综合孔径成像辐射计 滤波反投影算法 傅里叶-汉克尔变换 空间分辨率 辐射灵敏度
Other AbstractThinned rotating arrays of microwave/millimeter wave synthetic aperture imaging radiometer result in polar like visibility samplings where complex image reconstruction algorithms are in need and it is tough work to estimate important system parameters. To address this problem, a new method based on filtered back projection algorithm is proposed. In this approach, the system Point Spread Function (PSF) is obtained by 1-D Fourier-Bessel (Hankel) transforming from Dirac comb function. Spatial resolution and alias-free of view affected by radial and angular sampling intervals are analyzed by decomposing PSF into main lobe and a series of ring lobes. A new formulation to estimate the radiometric sensitivity of thinned rotating arrays by filtered back projection algorithm is also proposed. The consistency between the numerical and measured point spread function indicates that the proposed model is accurate.
Indexed ByEI ; CSCD
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Document Type期刊论文
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GB/T 7714
孙逢林,张升伟,刘浩,等. 基于滤波反投影算法的自旋式综合孔径辐射计分辨率与灵敏度分析[J]. 电子与信息学报,2014,36(6):1413-1418.
APA 孙逢林,张升伟,刘浩,&张成.(2014).基于滤波反投影算法的自旋式综合孔径辐射计分辨率与灵敏度分析.电子与信息学报,36(6),1413-1418.
MLA 孙逢林,et al."基于滤波反投影算法的自旋式综合孔径辐射计分辨率与灵敏度分析".电子与信息学报 36.6(2014):1413-1418.
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