Configurable adaptive optical system for imaging of ground-based targets from space

被引:0
作者
McComas, BK [1 ]
Friedman, EJ [1 ]
Hooker, RB [1 ]
Cermak, MA [1 ]
机构
[1] Ball Aerosp & Technol Corp, Boulder, CO 80306 USA
来源
OPTICS IN ATMOSPHERIC PROPAGATION AND ADAPTIVE SYSTEMS V | 2003年 / 4884卷
关键词
adaptive optics; wide field-of-view; remote sensing;
D O I
10.1117/12.463076
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
Space-based, high resolution, Earth remote sensing systems, that employ large, flexible, lightweight primary mirrors, will require active wavefront correction, in the form of active and adaptive optics, to correct for thermally and vibrationally induced deformations in the optics. These remote sensing systems typically have a large field-of-view. Unlike the adaptive optics on ground-based astronomical telescopes, which have a negligible field-of-view, the adaptive optics on these space-based remote sensing systems will be required to correct the wavefront over the entire field-of-view, which can be several degrees. The error functions for astronomical adaptive optics have been developed for the narrow field-of-view correction of atmospheric turbulence and do not address the needs of wide field space-based systems. To address these needs, a new wide field adaptive optics theory and a new error function are developed. Modeling and experimental results demonstrate the validity of the wide field adaptive optics theory and new error function. This new error function, which is a new extension of conventional adaptive optics, lead to the development of three new types of imaging systems: wide field-of-view, selectable field-of-view, and steerable field-of-view. These new systems can have nearly diffraction-limited performance across the entire field-of-view or a narrow movable region of high-resolution imaging. The factors limiting system performance will be shown. The range of applicability of the wide field adaptive optics theory is shown. The range of applicability is used to avoid limitations in system performance and to estimate the optical systems parameters, which will meet the system's performance requirements.
引用
收藏
页码:233 / 244
页数:12
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