天空背景光条件下空间激光通信系统粗跟踪光斑提取方法的研究

大气与环境光学学报 ›› 2017, Vol. 12 ›› Issue (3): 236-240.

• 光电技术 • 上一篇

天空背景光条件下空间激光通信系统粗跟踪光斑提取方法的研究

谢欣欣1，2，3, 江伦1，2, 张雷1，2, 佟首峰1，2 , 李响1，2，3

(1.长春理工大学空间光电技术研究所吉林长春 130022;
2.长春理工大学空地激光通信技术国防重点学科实验室吉林长春 130022;
3.长春理工大学光电工程学院吉林长春 130022 )

收稿日期:2015-10-30 修回日期:2015-11-06 出版日期:2017-05-28 发布日期:2017-05-18
通讯作者: 江伦（1984-），男，博士，讲师，主要从事光学系统设计与空间激光通信方面的研究。 E-mail:jlciomp@163.com
作者简介:谢欣欣（1990-），女，安徽宿州人，硕士研究生，主要从事空间激光通信系统中抑制天空背景光方法的研究。
基金资助:
Supported by National Natural Science Foundation of China(国家自然科学基金， 91338116)

Spot Extraction Method of Coarse Tracking Under Sky Background in Space Laser Communication

XIE Xinxin1，2，3, JIANG Lun1，2, ZHANG Lei1，2, TONG Shoufeng1，2, LI Xiang1，2，3

(1 The Institute of Space Optoelectronic technology, Changchun University of Science and Technology, Changchun, 130022, China;
2 Defence Key Subject Laboratory of Aero and Ground Laser Communication Technology, Changchun University of Science and Technology, Changchun, 130022, China;
3 School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun, Jilin, 130022, China)

Received:2015-10-30 Revised:2015-11-06 Published:2017-05-28 Online:2017-05-18

摘要/Abstract

摘要：

随着科学技术的迅速发展，人们对信息量的需求不断增大。空间激光通信因其具有通信速率高、通信束散角小、安全保密性高等众多优点，受到越来越广泛的应用。在空间激光通信系统中，天空背景辐射是影响系统性能的主要背景噪声。强天空背景条件下，粗跟踪光斑的提取成为了影响粗跟踪精度的主要难点。首先介绍了几种抑制天空背景光的方法，如采用原子滤光片、减小接收机口径等。在实验条件下，采取Otsu阈值处理和质心算法对粗跟踪光斑进行处理，分析天空背景光对粗跟踪成像光斑的影响。实验结果表明，在天空背景光影响下，这种Otsu阈值处理方法能够准确提取成像光斑，可以有效提高粗跟踪精度。

关键词: 空间激光通信, 粗跟踪, Otsu阈值法, 光斑质心算法

Abstract:

With the high-speed development of science and technology, the demand for information is growing rapidly. Space laser communication is used more and more widely due to its advantages, such as faster rate of communication, smaller beam divergence angle of communication and better security and confidentiality,. In the space laser communication system, the sky background radiation is the main background noise. Spot extraction has become a major impact on tracking accuracy in strong sky background conditions. Several methods for suppressing sky background were described, such as using atomic filters, reducing the caliber receiver, et al. Under the experimental conditions, coarse tracking spot is processed by using Otsu thresholding and centroiding algorithm. The effects of sky background light on coarse tracking spot is analyzed. The experimental results show that under the influence of the sky background, the Otsu thresholding method can accurately extract imaging spot, it also can effectively improve the coarse tracking accuracy.

Key words: space laser communication, coarse tracking, Otsu thresholding, spot centroid algorithm

中图分类号:

TN929.1

谢欣欣江伦张雷佟首峰李响. 天空背景光条件下空间激光通信系统粗跟踪光斑提取方法的研究[J]. 大气与环境光学学报, 2017, 12(3): 236-240.

XIE Xin-Xin, JIANG Lun, ZHANG Lei, TONG Shou-Feng, LI Xiang. Spot Extraction Method of Coarse Tracking Under Sky Background in Space Laser Communication[J]. Journal of Atmospheric and Environmental Optics, 2017, 12(3): 236-240.

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天空背景光条件下空间激光通信系统粗跟踪光斑提取方法的研究

Spot Extraction Method of Coarse Tracking Under Sky Background in Space Laser Communication

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