Fourier telescopy based on sparse transmitting array of T type

Yu Shuhai; Wang Jianli; Dong Lei; Liu Xinyue

Fourier telescopy is an unconventional imaging technique that combines the advantages of the laser active lighting and synthetic aperture techniques. The different spatial frequency components of target are received by changing the location of any of the two launch telescopes. After collected a sufficient number of Fourier component values, target image can be obtained by signal processing. To reduce system cost and try to get the details of the target, in this paper, a configuration program was proposed which T-sparse emitter array of laser beam. A comparative study of four kinds of targets and evenly spaced emitter array reconstructed image. The number of each arm of T type placed launch telescopes was 11. First, the eight low-frequency information of target was gotten continuously. Then three high-frequency components were extracted. By comparison with the single arm 11 and 16 of evenly spaced emitter array reconstructed image: the emission array that we used reconstructed image is much better than the same number of the number of evenly launch array, compared with configuration of homogeneous 16, overall imaging capability slightly difference, which is inevitable.

1. Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;

2. University of Chinese Academy of Sciences,Beijing 100049,China

Received Date: 2013-05-05

Rev Recd Date: 2013-06-03

Publish Date: 2014-01-25

Key words:

Abstract: Fourier telescopy is an unconventional imaging technique that combines the advantages of the laser active lighting and synthetic aperture techniques. The different spatial frequency components of target are received by changing the location of any of the two launch telescopes. After collected a sufficient number of Fourier component values, target image can be obtained by signal processing. To reduce system cost and try to get the details of the target, in this paper, a configuration program was proposed which T-sparse emitter array of laser beam. A comparative study of four kinds of targets and evenly spaced emitter array reconstructed image. The number of each arm of T type placed launch telescopes was 11. First, the eight low-frequency information of target was gotten continuously. Then three high-frequency components were extracted. By comparison with the single arm 11 and 16 of evenly spaced emitter array reconstructed image: the emission array that we used reconstructed image is much better than the same number of the number of evenly launch array, compared with configuration of homogeneous 16, overall imaging capability slightly difference, which is inevitable.

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Reference (33)

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Fourier telescopy based on sparse transmitting array of T type

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