一种扩大8mm波段综合孔径辐射计成像视场的方法

针对8mm波段综合孔径辐射计射频前端电尺寸较大、采用常规Y形阵列布局系统成像视场范围小的缺点，首先提出了一种星形天线阵列布局，它使可视度函数采样点之间的间隔变为天线单元问隔的一半，从而使系统的成像视场扩大到原来的两倍；然后，针对星形阵列可视度函数采样点缺失的问题，研究了背景对消与凸集投影相结合的图像反演算法，并进行了成像仿真．仿真结果验证了该反演算法的有效性．...

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Bibliographic Details
Published in红外与毫米波学报 Vol. 32; no. 1; pp. 50 - 55
Main Author 胡岸勇 苗俊刚
Format Journal Article
LanguageChinese
Published 北京航空航天大学电子信息工程学院,北京,100191 2013
Subjects
图像反演
综合孔径
辐射计
综合孔径
图像反演
辐射计
Online AccessGet full text
ISSN1001-9014
DOI10.3724/SP.J.1010.2013.00050

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Summary:针对8mm波段综合孔径辐射计射频前端电尺寸较大、采用常规Y形阵列布局系统成像视场范围小的缺点，首先提出了一种星形天线阵列布局，它使可视度函数采样点之间的间隔变为天线单元问隔的一半，从而使系统的成像视场扩大到原来的两倍；然后，针对星形阵列可视度函数采样点缺失的问题，研究了背景对消与凸集投影相结合的图像反演算法，并进行了成像仿真．仿真结果验证了该反演算法的有效性．
Bibliography:HU An-Yong, MIAO Jun-Gang （ Dept. Electronics and Information Engineering of Beihang University, Beijing 100191, China）
The field of view （FOV） of the 8 mm band synthetic aperture radiometer with regular Y-shaped array is small due to the relative large electronic scale of the RF front. To overcome this disadvantage, a kind of star-shaped array is presented. In the star-shaped array, the visible distance is only half of that of the antennas, so it doubles the imaging FOV. To deal with the missing visibilities of the star-shaped array, an image restoration method based on back-dropping and projecting onto convex set （POCS） is presented. Imaging simulations were carried out. The simulations validate the effectivity of the presented method.
31-1577/TN
synthetic aperture; radiometer; image restoration
ISSN:1001-9014
DOI:10.3724/SP.J.1010.2013.00050