基于改进迭代FFT算法的均匀线阵交错稀疏布阵方法

doi:10.11999/JEIT 150749

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Abstract

Interleaved thinned arrays sharing aperture based on the aperture ratio of reuse is an effective way to realize airborne multifunction. A new method to interleave thinned linear arrays is proposed in this paper based on the modified Iterative Fast Fourier Transform (IFFT) algorithm. The sub-arrays spectrum energy distributed is achieved evenly by making the Fourier transform to linear array antennas’ excitation, analyzing the frequency spectrum and selecting the incentive crossly to ensure the positions of the thinned sub-array antennas. On this basis, the iterative FFT algorithm is adopted to thin the linear array. The simulations show that compare with the difference sets and the genetic algorithm, this technique can ensure the first subarray under the condition of thinned optimization, at the same time, the Peak Sidelobe Level (PSL) of the second subarray is similar to the first sub-array. It means that the new method is effective to restrain the side lobe levels and useful to interleaved array optimization.

Key words： Array antenna Shared aperture Thinned interleaved Iterative FFT Sidelobe level

Received: 24 June 2015 Published: 14 January 2016

PACS:

TN820

Fund:

The National Natural Science Foundation of China (61172148)

Corresponding Authors: WANG Buhong E-mail: wbhyl@aliyun.com

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	LI Longjun
	WANG Buhong
	XIA Chunhe

Cite this article:

LI Longjun,WANG Buhong,XIA Chunhe. Interleaved Thinned Linear Arrays Based on Modified Iterative FFT Technique[J]. JEIT, 2016, 38(4): 970-977.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT 150749 OR http://jeit.ie.ac.cn/EN/Y2016/V38/I4/970

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