期刊文献+

空间光通信中CCD亚像素的分辨率 被引量:4

Sub-Pixel Resolution of CCD in Optical Communication
收藏 分享 导出
摘要 在空间光通信跟踪、瞄准和捕获(APT)系统中,探测终端的位置分辨率对整个通信系统的性能起着巨大的影响,为了使终端探测器的分辨率达到系统的要求,进一步提高跟踪、瞄准和捕获系统的性能,提出了一种新的提高探测器CCD分辨率的方法,即多次采样处理。通过将两次采样的数据进行叠加处理,然后利用软件进行控制,可使CCD的位置分辨率提高到亚像素的精度。模拟结果表明,利用该多次采样处理可以将CCD的位置分辨率提高到1/2像素,1/4像素或更高的精度。同时该方法还可以抵消诸如散粒噪声、暗电流噪流起伏等噪声,从而使信噪比得到提高。 In acquisition, pointing and tracking (APT) system of optical communications, the resolution of detector is very important for whole system. In order to meet the specification of the communications, improve the performance of APT ulteriorly, a new method is put forward in this paper, it is multiple-sampling for detecting data. According to this method, two results of sampling are added together and disposed by procedure, this can make resolution of charge coupled device (CCD) attain sub-pixel. From the simulation of this method, the resolutions of CCD get to 1/2, 1/4 pixel or more. At the same time, this method can also improve the signal noiseratio (SNR) of data. So, the method has been proved to be effective to improve the resolution to sub-pixel for CCD in APT system.
作者 张文涛 ZHANG Wen-tao( Department of Physics, Tongji University, Shanghai 200092, China;Department of Electronics Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China)
出处 《中国激光》 EI CAS CSCD 北大核心 2006年第6期788-790,共3页 Chinese Journal of Lasers
关键词 光通信 多次采样 亚像素 跟踪 瞄准和捕获 optical communication multiple-sampling sub-pixel acquisition, pointing and tracking
作者简介 张文涛(1976-),男,山东济南人,讲师,同济大学博士研究生,主要从事原子光刻技术、空间光通信技术方面的研究。E-mail:glietzwt@163.com
  • 相关文献

参考文献10

二级参考文献30

  • 1徐大刚.激光的空域参数与测量[J].激光集锦,1993,3(2):31-37. 被引量:3
  • 2郑琳,仲思东,何对燕,.电荷耦合成像器件的调制传递函数[J].武汉测绘科技大学学报,1996,21(2):176-182. 被引量:5
  • 3陈培锋,王英.由二阶矩定义的光束参量变换理论及其推广的设想[J].激光与光电子学进展,1996(3):11-14. 被引量:1
  • 4冯琛.CCD太阳角度计中的形心计算法[J].红外研究,1987,6(3):161-166. 被引量:1
  • 5[1]Siegman A E. New developments in laser resonators[J].Proceedings of the SPIE.1990,1224:2-14. 被引量:1
  • 6[6]SUN W, WEI G H. The critical factors in the laser beam characterization measurement algorithm[C]. The International Conference on Industrial Lasers, China:Wuhan, 1999. 被引量:1
  • 7[7]ISO/DIS 11146. Test methods for laser beam parameters: Beam widths, divergence angle and beam propagation factor[S].1995. 被引量:1
  • 8[8]Roundy C B. Techniques for accurately measuring laser beam width with commercial CCD cameras[C]. 5th International workshop on laser beam and optics characterization, Germany: Munich, 1997.422-445. 被引量:1
  • 9[9]Eppich B, Kostka R. Reliability of beam parameter measurement with CCD cameras[C]. 3th International workshop on laser beam and optics characterization, Canada: Quebec, 1995. 被引量:1
  • 10Hoist G C. CCD Arrays, Cameras, and Displays[M]. Willmann-Bell. 1998. 被引量:1

共引文献99

同被引文献62

引证文献4

二级引证文献45

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈