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Ma H, Xie Z, Long X, et al. Synthetic aperture imaging by using spatial modulation diversity technology with stochastic parallel gradient descent algorithm. Opt Express. 2015;23(11):14836-49doi: 10.1364/OE.23.014836.
Ma, H., Xie, Z., Long, X., Qi, B., Ren, G., Shi, J., Cui, Z., Jiang, Y., & Xu, X. (2015). Synthetic aperture imaging by using spatial modulation diversity technology with stochastic parallel gradient descent algorithm. Optics express, 23(11), 14836-49. https://doi.org/10.1364/OE.23.014836
Ma, Haotong, et al. "Synthetic aperture imaging by using spatial modulation diversity technology with stochastic parallel gradient descent algorithm." Optics express vol. 23,11 (2015): 14836-49. doi: https://doi.org/10.1364/OE.23.014836
Ma H, Xie Z, Long X, Qi B, Ren G, Shi J, Cui Z, Jiang Y, Xu X. Synthetic aperture imaging by using spatial modulation diversity technology with stochastic parallel gradient descent algorithm. Opt Express. 2015 Jun 01;23(11):14836-49. doi: 10.1364/OE.23.014836. PMID: 26072842.
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Opt Express. 2015 Jun 01;23(11):14836-49. doi: 10.1364/OE.23.014836.

Synthetic aperture imaging by using spatial modulation diversity technology with stochastic parallel gradient descent algorithm.

Optics express

Haotong Ma, Zongliang Xie, Xuejun Long, Bo Qi, Ge Ren, Jianliang Shi, Zhangang Cui, Yang Jiang, Xiaojun Xu

PMID: 26072842 DOI: 10.1364/OE.23.014836

Abstract

In this paper, we propose and demonstrate the synthetic aperture imaging by using spatial modulation diversity technology with stochastic parallel gradient descent (SPGD) algorithm. Instead of creating diversity images by means of focus adjustments, the technology, proposed in this paper, creates diversity images by modulating the transmittance of individual sub-aperture of multi-aperture system, respectively. Specifically, spatial modulation is realized by switching off the transmittance of each sub-aperture with electrical shutters, alternately. Based on these multi diversity images, SPGD algorithm is used for adaptively optimizing the coefficients of Zernike polynomials to reconstruct the real phase distortions of multi-aperture system and to restore the near-diffraction-limited image of object. Numerical simulation and experimental results show that this technology can be used for joint estimation of both pupil aberrations and an high resolution image of the object, successfully. The technology proposed in this paper can have wide applications in segmented and multi-aperture imaging systems.

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