由空间频域上的非均匀采样数据重建图象的方法研究

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Abstract This paper studies intensively the "bilinear interpolation and 2D-IFFT" method of reconstructing image from the unevenly spaced data in the spatial frequency domain. The basic ideas are to decide an evenly grid, interpolate the unevenly spaced data on a uniform grid and take the 2D-IFFT of the data on the uniform grid. The paper presents the principle of deciding the grid, discusses bilinear interpolation and analyses some important problems of 2D-IFFT. The method has been applied to synthetic aperture radar(SAR) imaging and the result is satisfactory.

Key words： SAR Image reconstructing Bilinear interpolation 2D-IFFT

Received: 06 October 1995

PACS:	TN911.73
	TN957.7

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	Wang Junfeng
	Mao Yinfang

Cite this article:

Wang Junfeng,Mao Yinfang. STUDY ON THE METHOD OF RECONSTRUCTING IMAGE FROM THE UNEVENLY SPACED DATA IN THE SPATIAL FREQUENCY DOMAIN[J]. , 1997, 19(4): 459-463 .

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http://jeit.ie.ac.cn/EN/ OR http://jeit.ie.ac.cn/EN/Y1997/V19/I4/459