...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical Engineering >Generalized phase diversity method for self-compensation of wavefront aberration using spatial light modulator
【24h】

Generalized phase diversity method for self-compensation of wavefront aberration using spatial light modulator

机译：Generalized phase diversity method for self-compensation of wavefront aberration using spatial light modulator

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

We propose an adaptive optics system for a lightweight remote sensing sensor. The phase diversity (PD) technique, in which known wavefronts (phase diversity) are applied to the optics and the inherent aberrations are estimated using the acquired images without a priori information, is a key to realizing the system. For the reduction of computing cost and the enhancement of the estimation accuracy of aberration, a spatial light modulator (SLM) is adopted not only for the wavefront compensator but also for the PD generator. The SLM produces arbitrary "aberration modes" that are each represented by a Zernike polynomial. Therefore, optimal phase diversities are applied to the optical system and particular modes are effectively obtained, which makes it possible to overcome the conventional PD generated by defocusing that describes only the quadratic form and lacks information of a particular mode. To solve the complex inverse problem of phase diversity with low computing cost, a general regression neural network (GRNN) is used. Moreover, principal component analysis compresses the input data for GRNN by extracting information from collected images in Fourier space, and reduces computation cost considerably without degrading estimation accuracy. The mathematical model is implemented and its performance is validated by numerical simulation.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号