Multi-spectral modulation detection of co-phasing errors for sparse-optical-synthetic-aperture systems

Li Dong; Qi Peng; Haotong Ma; Zongliang Xie; Zhipeng Wang

doi:10.1117/12.2243230

24 October 2016 Multi-spectral modulation detection of co-phasing errors for sparse-optical-synthetic-aperture systems

Li Dong, Qi Peng, Haotong Ma, Zongliang Xie, Zhipeng Wang

Proceedings Volume 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 96820W (2016) https://doi.org/10.1117/12.2243230
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China

Abstract

The sparse-optical-synthetic-aperture systems enlarge the aperture and increase the spatial resolution of telescope system via several sub-apertures distributed in specific way. The difficulty of its realization lies in detecting and correcting co-phase errors of the sub-apertures. This paper proposed the method of multi-spectral modulation detection of co-phasing errors for sparse-optical-synthetic-aperture systems. The method can detect the errors via phase modulation on a sub-aperture in the situation of different wavelengths. Firstly, this paper introduced the theory and implementation process of the method in detail. Then the paper analyzed the detection performance of the method and the influence of the sub-apertures structure on detection performance based on a three-sub-aperture system. These results show that the method can accurately detect the sub-apertures' co-phasing errors of the sparse-optical-synthetic-aperture systems. Compared with the current methods, the method proposed in this paper has many advantages, such as faster detection speed and wider detection range.

Citation Download Citation

Li Dong, Qi Peng, Haotong Ma, Zongliang Xie, and Zhipeng Wang "Multi-spectral modulation detection of co-phasing errors for sparse-optical-synthetic-aperture systems", Proc. SPIE 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 96820W (24 October 2016); https://doi.org/10.1117/12.2243230

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KEYWORDS

Modulation

Optical transfer functions

Phase modulation

Error analysis

Telescopes

Fourier transforms

Phase shifts

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