• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied optics >FABRY-PEROT CCD ANNULAR-SUMMING SPECTROSCOPY - STUDY AND IMPLEMENTATION FOR AERONOMY APPLICATIONS
【24h】

FABRY-PEROT CCD ANNULAR-SUMMING SPECTROSCOPY - STUDY AND IMPLEMENTATION FOR AERONOMY APPLICATIONS

机译：FABRY-PEROT CCD环相加光谱法-在航空航天应用中的研究与实现

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

摘要

The technique of Fabry-Perot CCD annular-summing spectroscopy, with particular emphasis on applications in aeronomy, is discussed. Parameter choices for optimizing performance by the use of a standard format CCD array are detailed. Spectral calibration methods, techniques for determining the ring pattern center, and effects imposed by limited radial resolution caused by superpixel size, variable by on-chip binning, are demonstrated. The technique is carefully evaluated experimentally relative to the conventional scanning Fabry-Perot that uses a photomultiplier detector. We evaluate three extreme examples typical of aeronomical spectroscopy using calculated signal-to-noise ratios. Predicted sensitivity gains of 10-30 are typical. Of the cases considered, the largest savings in integration time are estimated for the day sky thermospheric (OD)-D-1 case, in which the bright sky background dominates the CCD read noise. For profile measurements of faint night sky emission lines, such as exospheric hydrogen Balmer-alpha, long integration times are required to achieve useful signal-to-noise ratios. In such cases, CCD read noise is largely overcome. Predictions of a factor of 10-15 savings in integration time for night sky Balmer-alpha observations are supported by field tests. Bright, isolated night sky lines such as thermospheric (OD)-D-1 require shorter integration times, and more modest gains dependent on signal level are predicted. For such cases it appears from estimate results that the Fabry-Perot CCD annular-summing technique with a conventional rectangular format may be outperformed by a factor of 2-5 by special CCD formats or by unusual optical coupling configurations that reduce the importance of read noise, based on the ideal transmission for any additional optics used in these configurations. (C) 1996 Optical Society of America [References: 13]
机译：讨论了法布里-珀罗（Fabry-Perot）CCD环形总和光谱技术，特别强调了在航空学中的应用。详细介绍了通过使用标准格式CCD阵列来优化性能的参数选择。演示了光谱校准方法，确定环形图案中心的技术，以及由超像素尺寸引起的有限径向分辨率所带来的影响，这些影响可通过片上装仓进行调整。相对于使用光电倍增管检测器的常规扫描Fabry-Perot，该技术是经过实验仔细评估的。我们使用计算出的信噪比评估了典型的航空光谱学的三个极端示例。预计的灵敏度增益通常为10-30。在考虑的情况中，对于白天热球（OD）-D-1情况，估计可以节省最多的时间，在这种情况下，明亮的天空背景占了CCD的读取噪声。对于微弱的夜空发射线（如大气层氢Balmer-alpha）的轮廓测量，需要较长的积分时间才能获得有用的信噪比。在这种情况下，可以大大克服CCD读取噪声。现场测试支持将夜空Balmer-alpha观测的积分时间节省10-15倍的预测。明亮，孤立的夜空线，例如热层（OD）-D-1，需要更短的积分时间，并且可以预测取决于信号电平的更适度的增益。对于此类情况，从估计结果看来，采用常规CCD格式的Fabry-Perot CCD环形求和技术在特殊CCD格式或不寻常的光耦合配置下的性能可能会降低2-5倍，从而降低了读取噪声的重要性，基于这些配置中使用的任何其他光学器件的理想传输。 （C）1996年美国眼镜学会[参考文献：13]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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