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Simulations and experiment of lensless imaging with intensity correlation array

In the process of distant target imaging by optical telescope, large aperture mirrors with high precision is needed to collect the light field of target, the result is affected by atmospheric turbulence and aberration seriously, and lensless imaging is a new way which can reduce imaging equipment's complexity and accuracy requirements. In this paper, we put forward a new lensless imaging method on the basis of intensity correlation theory: the intensity fluctuations is collected by sensors and the target's image can be calculated by correlation and phase retrieval algorithm. This imaging method can achieve high resolution without using high precision mirrors and adaptive system. Simulations and experiments shows that intensity correlation lensless imaging method can get good image for smaller angular diameter targets.