光学综合孔径望远镜阵的光束组合器  

Beam Combiner in Optical Aperture Synthesis Telescope Array

作　　者：王海涛[1] 周必方[1] 

机构地区：[1]中国科学院国家天文台南京天文光学技术研究所,南京210042

出　　处：《光学学报》2002年第9期1109-1115,共7页Acta Optica Sinica

基　　金：中国科学院重点项目基金;中国科学院空基综合信息网基金;86 3 2基金资助课题

摘　　要：光束组合器是光学综合孔径望远镜阵重要技术组成部分之一。从光束组合器所产生的光干涉条纹中提取中央条纹 (主峰 )相位和可见度信息 ,实现对望远镜状态、延迟线光程补偿与条纹跟踪 ,光束平行性伺服等进行精细馈控 ,从而高灵敏度、高效率地得到图像重构的闭合相位等数据 ,最后获取高分辨率的目标图像。Beam combiner is the key part of optical aperture syntheiss telescope array. From the interferogram produced by beam combiner, the useful messages such as the central fringe phase and visibility can be extracted. With these messages, one can make it into reality to control the telescope status, compensate the path with delay lines, track fringes, beam parallel character feed back and fine control so as to get enough data used for closure phase calculating and image reconstruction. An initial result on the beam combiner for optical aperture synthesis telescope array is presented.

关 键 词：光学综合孔径望远镜阵 干涉条纹 光束组合器 相位闭合 天文望远镜 

分 类 号：TH751[机械工程—仪器科学与技术]