任意阶运动目标强度关联成像

Nth-order intensity correlated imaging for moving target

开展了强度关联阶数对于运动目标关联成像影响的研究,通过改变信号光束和参考光束的阶数,分别讨论了切向和轴向运动目标在不同强度关联阶数下的关联成像质量。在运动目标关联成像系统原理光路的基础上,从理论上重点分析了不同强度关联阶数对关联成像计算模型的影响,并且利用计算机进行了仿真实验。结果表明:强度关联阶数的改变不能消除运动模糊,增加信号光束的阶数可以改善关联成像质量,但是在去除背景项的情况下,反而是最低阶的关联成像质量最好,并且轴向运动目标的关联成像质量下降地更为严重。

The influence of intensity correlation order on correlated imaging for moving target was researched. The image quality of correlated imaging for tangential and axial moving target in different intensity correlation order was discussed by changing the signal light order and the reference light order. Based on the schematic of Nth-order lensless correlated imaging for moving target, analysis of the influence of different intensity correlation order was performed with emphasis on the correlated imaging mathematic model, and the simulation experiments were performed. The results suggest that it can not effectively eliminate the motion blur by changing the intensity correlation order, and the image quality will be better with the increase of signal light order. However, the best quality can be obtained by the lowest-order with background subtraction, and the image quality of axial moving target will decrease more serious.