Posts Tagged ‘atmosphere turbulence’:

Study on Influence of Atmosphere Turbulence on Entangled Correlated Imaging and the Method to Mitigate

The quantum correlated imaging, also known as quantum ?ghost imaging‘, uses the properties of quantum entanglement to obtain a clear image of the object on the idler optical path, where there is no object in the path. The distributed nature of ?ghost imaging‘make it a good candidate for the distributed image processing, and the distributed

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The Experimental Study on Lucky Imaging Technology

In this dissertation, the basic theory and key points of Lucky Imaging (LI) technology were introduced, and a series of LI experiments were implemented, including observation of single star, binary and spread-target near-ground. The result shows that LI can improve the performance of imaging through atmosphere turbulence. It makes a single invisible star to be

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The Study on Auto-focus Method for Optical Imaging System Based on Image Processing

It is a necessary condition for the high precision measurement to obtain definite images in the range photogrammetry systems. At present, all systems used in the ranges take a manual focusing method to get definite images, which does not work effectively and can be disturbed easily by various arbitrary factors, and with this method, it’s

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A Design of the Atmosphere Turbulence Simulator Basic on Liquid Crystal

In the atmosphere laser communication systems, for the effects of laser transmission by atmospheric turbulence and other factors, wave amplitude and phase changing conduced a series of turbulent wave-front distortion effects. In response to the phenomenon, we designed and developed the atmospheric turbulence simulator to simulate the effects of atmospheric turbulence on laser communication systems.The

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The Study on Image Processing Based Auto-focus Method and Its System Realization

It is a crucial influencing factor for measurement precision to obtain definite images in the photogrammetry systems of range and railway geometry parameters measurement. Traditional optical measurement imaging device take a manual focusing method to get definite images, which does not work effectively and can be disturbed easily by various arbitrary factors. With this method,

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Research on Atmospheric Blur Removing Algorithms of Remote Sensing Images

At present, imaging the interested object through atmosphere is the inevitable problem for all the imaging equipments running in the Earth’s atmosphere. For the existence of atmospheric structure such as turbulence, the images obtained by these equipments are often blurred in varying degrees. Consequently, these atmospheric blurred images require to be restored. The atmospheric blurred

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Research on Disturbance Compensation Technology for Space Optical Communication

The space optical communication which replaces microwave communicaton will be a main space communication manner, because of its high data transmission rate, great communication capability, low transmitting power and strong security. But when the beam propagates through atmosphere channel, atmosphere turbulence will induce intensity fluctuation, phase angle fluctuation, arrival angle fluctuation, beam drift and spreading,

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