Nonuniformity Correction of Spot-detecting Camera in Satellite-to-ground Laser Communication ATP System

被引：0

作者：

Qian Feng ^{[1
]}

Jia Jian-Jun ^{[1
]}

Wang Jian-Yu ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Tech Phys, Shanghai 200083, Peoples R China

来源：

2013 32ND CHINESE CONTROL CONFERENCE (CCC) | 2013年

关键词：

Optical Communication; Positioning Accuracy; Nonuniformity Correction; CMOS Sensor; ATP System;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Requirements of ATP (Acquisition, Tracking, Pointing) system for laser communication are expounded. According to the needs, the working of spot-detecting camera in ATP system is put forward, and the advantages of selecting CMOS sensor are explained. But the nonuniformity from CMOS sensor greatly limits the image quality of spot-detecting camera. So the nonuniformity must be corrected before image processing. In this paper, several sources of the nonuniformity and suppression methods are analyzed. The method of two-point nonuniformity correction is used to correct real-time image which is captured by STAR1000. The result of objective evaluation for the method shows that correction effect can satisfy the practical requirement. Positioning accuracy and signal-noise ratio of spot-detecting camera can be improved. At the same time energy demand of beacon used for laser communication is reduced.

引用

页码：4481 / 4485

页数：5