相干场成像四光束相位闭合算法研究  

Four-phase closure algorithm for coherent field imaging

作　　者：曹蓓[1] 罗秀娟[1] 司庆丹[1] 曾志红[1] 

机构地区：[1]中国科学院西安光学精密机械研究所,西安710119

出　　处：《物理学报》2015年第5期179-185,共7页Acta Physica Sinica

基　　金：中国科学院"西部之光"人才培养计划"西部博士资助项目"(批准号:Y429621213)资助的课题~~

摘　　要：依据相干场成像相位闭合实现原理,在T型多光束发射阵列下推导出一种新的四光束相位闭合算法.定义了基于四重积的闭合比率求解公式,推导出在消除大气随机相位误差的同时能抑制光强闪烁对成像质量的影响.数值模拟结果证明其有效性,为多光束相干场成像系统消除大气扰动误差提供了新的途径.According to the realization principle of phase closure in coherent field imaging, a new four-phase closure （FPC） algorithm is proposed for T-array multi-beam transmitter system. A type of four-item measurement radio of closure phase is first defined, and then the validity of FPC is confirmed in cancelling out the random atmospheric phase aberrations as well as eliminating atmospheric scintillation effect on degradation of the reconstructed image. Simulations prove the effectiveness of FPC, providing a new approach in removing atmospheric aberrations for multi-beam coherence field imaging.

关 键 词：相干场成像 相位闭合 图像重构 闪烁效应 

分 类 号：O436[机械工程—光学工程]