Segmented plane reconnaissance imaging system and method with odd-even lens linear arrays distributed alternately

Abstract

The invention discloses a segmented plane reconnaissance imaging system and method with odd-even lens linear arrays distributed alternately. A micro lens array is arranged on a photon integrated circuit chip. The micro lens array is formed by alternately and uniformly distributing traditional interference arms and novel interference arms along the circumference at intervals, and each traditional / novel interference arm is arranged along the radial direction of the circumference. Each novel interference arm is formed by tightly arranging an odd number of lenses along the radial straight line ofthe same radius of the circumference, wherein two sides of a middle lens are symmetrically paired with two lenses, and the middle lens is not paired. An imaging system performs multi-time imaging at arotating angle. The frequency information of each time of imaging is reconstructed into a frequency spectrum matrix. The frequency spectrum matrix is fused into a final frequency spectrum matrix, andinverse Fourier transform is performed to obtain a target imaging result. According to the invention, the problem that a traditional interference arm can only sample frequency information of odd times of fundamental frequency is solved; the frequency spectrum radial sampling rate of the system is improved; the imaging quality of the system is greatly improved; and meanwhile, hardware cost and manufacturing difficulty are hardly increased, and the imaging view field of the system is not reduced.

Description

technical field [0001] The invention belongs to the field of interference imaging, and relates to a segmented plane reconnaissance imaging system and method in which odd and even lens arrays are alternately distributed. Background technique [0002] The segmented plane reconnaissance imaging system is an emerging interferometric imaging system that can reduce the volume, quality and cost of the imaging system. It consists of three parts: microlens array, photonic integrated circuit chip 4 and information processing unit 7 . The two-dimensional microlens array is uniformly arranged radially by multiple one-dimensional microlens arrays, and the one-dimensional microlens array includes multiple pairs of lenses; the lens couples the collected light into the photonic integrated circuit chip for coherence, The coherent light is processed by the back-end information processing unit to obtain the spatial frequency information of the target, and the light intensity distribution of th...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in the traditional segmented planar reconnaissance imaging system in the background technology, the present invention proposes a segmented planar reconnaissance imaging system with alternately distributed odd and even lens arrays, which solves the insufficient sampling of spatial frequency information in the direction of the interference arm in the traditional system At the same time, the spectral radial sampling rate of the system can be improved, and the sampling can be rotated multiple times to increase the number of equivalent interference arms, thereby improving the imaging quality of the system, while hardly increasing the hardware cost and manufacturing difficulty, and not reducing the imaging efficiency of the system. field of view

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