NSF/AFOSR Astronomy: Precision Imaging with Adaptive Optics Non-Redundant Masking Interferometry

NSF/AFOSR 天文学：利用自适应光学非冗余掩蔽干涉测量进行精密成像

• 批准号: 0335695
• 负责人: James Lloyd
• 金额: $ 18.91万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-15 至 2005-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0335695&HistoricalAwards=false
• 关键词: NSF; AFOSR; Astronomy; Precision; Imaging

This project will apply the non-redundant masking technique to an adaptive optics system. The advantages of non-redundant masking are: rejection of atmospheric noise resulting in improved signal-to-noise ratio; precision calibratability of the data resulting in reliable results even beyond the diffraction limit (super-resolution); and image reconstruction with closure phase techniques that is immune to phase errors introduced by the atmosphere, telescope, and adaptive optics system. Visibility data will be simultaneously calibrated with wavefront sensor telemetry, eliminating temporal variability in the atmospheric and AO system properties as a systematic uncertainty.

本计画将非冗余遮蔽技术应用于自适应光学系统。非冗余掩模的优点是：抑制大气噪声，从而提高信噪比;数据的精确校准性，从而产生可靠的结果，甚至超过衍射极限（超分辨率）;以及利用闭合相位技术进行图像重建，该技术不受大气、望远镜和自适应光学系统引入的相位误差的影响。能见度数据将与波前传感器遥测同时校准，消除大气和AO系统属性的时间变化作为系统的不确定性。