Temporal-spatial watermark fusion guidance using laser multiple sub-beams interference

Qu, Pengfei; Niu, Yanting; Wu, Meng-yao; Dong, Wei-bin; Huang, Yong Mao; Xie, Yue Ru

doi:10.1016/j.ijleo.2019.05.017

Cited by 2 publications

(2 citation statements)

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“…Assuming that the propagation path is 𝐿 t and the atmospheric structure parameterthe is 𝐶 𝑛 2 , Rytov variance 𝜎 𝑅 is calculated by: 𝜎 𝑅 2 = 0.5𝐶 𝑛 2 𝑘 7 6 𝐿 𝑡 11 6 The scintillation caused by atmospheric turbulence is analyzed by Gamma-Gamma model: With the diameter of optical lens and detection distance 𝐿 𝑡 , 𝑑 𝑡 can be calculated with:…”

Section: Turbulencementioning

confidence: 99%

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Atmospheric influence on computational ghost imaging semi-active laser detection system

Wang

Chen

et al. 2022

Thirteenth International Conference on Information Optics and Photonics (CIOP 2022)

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Conventional semi-active laser guidance (SAL) systems take advantage of the laser designator to illuminate precisely and form a laser spot on the target. The seeker collects reflected light by a quadrant detector and converts to relative position information to guide the missile to the target accurately. Computational ghost imaging (CGI) provides new promising scheme for semi-active laser guidance in virtue of the similarity in the system composition. As with traditional optical imaging processes, scattering and turbulence in atmospheric medium interfere with the final imaging result. In this work, a mathematical model of entire imaging process is established basing on principles of Mie scattering of colloidal particles and scintillation of turbulence. Analysis of the SNR of the reconstructed image to different environment parameters or system parameters indicates that both scattering and turbulence lead to a decrease in imaging quality. In the mechanism of action, turbulence introduces a random multiplicative noise while scattering highlights the interference of the inherent additive noise to the imaging system.

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Section: Turbulencementioning

confidence: 99%

“…Imaging detection should be applied to further improve the guidance accuracy. Array detector application can increase structural complexity and manufacturing cost [6] . A new technique named computational ghost imaging (CGI) is applied to SAL detection system [7] .…”

Section: Introductionmentioning

confidence: 99%