Research on the effect of noise-containing signal light on correlated imaging in complex environment (Invited)

Wei Tan; Xianwei Huang; Teng Jiang; Qin Fu; Suqin Nan; Xuanpengfan Zou; Yanfeng Bai; Xiquan Fu

doi:10.3788/IRLA20210657

Journals >Infrared and Laser Engineering >Volume 50 >Issue 12 >Page 20210657 > Article

Infrared and Laser Engineering
Vol. 50, Issue 12, 20210657 (2021)

Research on the effect of noise-containing signal light on correlated imaging in complex environment (Invited)

Wei Tan, Xianwei Huang, Teng Jiang, Qin Fu..., Suqin Nan, Xuanpengfan Zou, Yanfeng Bai and Xiquan Fu^*|Show fewer author(s)

Author Affiliations

College of Computer Science and Electronic Engineering, Hunan University, Changsha 410082, China

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DOI: 10.3788/IRLA20210657 Cite this Article

Wei Tan, Xianwei Huang, Teng Jiang, Qin Fu, Suqin Nan, Xuanpengfan Zou, Yanfeng Bai, Xiquan Fu. Research on the effect of noise-containing signal light on correlated imaging in complex environment (Invited)[J]. Infrared and Laser Engineering, 2021, 50(12): 20210657 Copy Citation Text

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Abstract

Correlated imaging is a kind of novel imaging technology which can reconstruct the target information on the optical path through intensity correlation calculation. In complex environments, turbulence, scattering and other factors will affect the measurement of signal light in the form of noise. Since the signal light in correlated imaging is measured by bucket detector, it is necessary to systematically study the processing of noise-including signal light and its influence on the process of correlated imaging. Under this background, this paper systematically reviewed the related research of our research group. Firstly, the correlated imaging model in complex environment was briefly introduced. Then, the influence of noise-including signal light on correlated imaging of binary target and gray target was analyzed. Then, the signal noise caused by turbulence in the atmospheric channel was measured and analyzed. Finally, the application of the correlated imaging was prospected.

Keywords

complex environment correlated imaging imaging quality imaging system quantum optics

$ G\left( \rho \right) = \left\langle {{I_r}\left( \rho \right){I_B}} \right\rangle - \left\langle {{I_r}\left( \rho \right)} \right\rangle \left\langle {{I_B}} \right\rangle $

(1)

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$ {I_B} = {I_{{\text{signal}}}}{\text{ + }}{I_{{\text{noise}}}} $

(2)

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$ {I_{{\text{signal}}}}{\text{ = }}\int {{I_t}\left( \rho \right)} t\left( \xi \right){\rm d}\xi $

(3)

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$ \sigma _I^2 = \frac{{\left\langle {{I^2}} \right\rangle }}{{{{\left\langle I \right\rangle }^2}}} - 1 $

(4)

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$ \sigma _I^2 = 0.492C_n^2{k^{7/6}}{L^{11/6}} $

(5)

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$ C_n^2{\text{ = }}\frac{{\sigma _I^2}}{{0.492{k^{7/6}}{L^{11/6}}}} $

(6)

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$ {x}_{\text{c}}=\frac{{\displaystyle \iint xI(x,y){\rm d}x{\rm d}y}}{{\displaystyle \iint \langle I(x,y)\rangle {\rm d}x{\rm d}y}}\text{，}{y}_{\text{c}}=\frac{{\displaystyle \iint yI(x,y){\rm d}x{\rm d}y}}{{\displaystyle \iint \langle I(x,y)\rangle {\rm d}x{\rm d}y}} $

(7)

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