Incoherent coincidence imaging of space objects

Tianyi Mao; Qian Chen; Weiji He; Guohua Gu

doi:10.1117/12.2242623

24 October 2016 Incoherent coincidence imaging of space objects

Tianyi Mao, Qian Chen, Weiji He, Guohua Gu

Proceedings Volume 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 96820Y (2016) https://doi.org/10.1117/12.2242623
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China

Abstract

Incoherent Coincidence Imaging (ICI), which is based on the second or higher order correlation of fluctuating light field, has provided great potentialities with respect to standard conventional imaging. However, the deployment of reference arm limits its practical applications in the detection of space objects. In this article, an optical aperture synthesis with electronically connected single-pixel photo-detectors was proposed to remove the reference arm. The correlation in our proposed method is the second order correlation between the intensity fluctuations observed by any two detectors. With appropriate locations of single-pixel detectors, this second order correlation is simplified to absolute-square Fourier transform of source and the unknown object. We demonstrate the image recovery with the Gerchberg-Saxton-like algorithms and investigate the reconstruction quality of our approach. Numerical experiments has been made to show that both binary and gray-scale objects can be recovered. This proposed method provides an effective approach to promote detection of space objects and perhaps even the exo-planets.

Citation Download Citation

Tianyi Mao, Qian Chen, Weiji He, and Guohua Gu "Incoherent coincidence imaging of space objects", Proc. SPIE 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 96820Y (24 October 2016); https://doi.org/10.1117/12.2242623

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