| 卫星激光通信中目标跟踪算法的改进 |
| |
| 引用本文： | 周琳,艾勇,龚云华.卫星激光通信中目标跟踪算法的改进[J].红外与激光工程,2004,33(2):185-188. |
| |
| 作者姓名： | 周琳 艾勇 龚云华 |
| |
| 作者单位： | 武汉大学,电子信息学院,湖北,武汉,430079 |
| |
| 摘 要： | 分析了用重心法计算光斑能量中心时图像相对光源强度分布失真引入的误差，建立了强度失真模型，引入修正该失真的修正因子，提出了相应的修正算法，并讨论了该修正算法在卫星激光通信跟踪系统中的应用。计算机模拟结果表明，在适当的情况下，计算出的由于像面上强度分布相对光源失真而导致的跟踪角度偏差可增至109″，从而证明了在激光卫星通信系统中，修正因子的引入提高了定位、跟踪精度和信道的可靠性。
|
| 关 键 词： | 卫星激光通信 强度中心 失真 修正因子 |
| 文章编号： | 1007-2276(2004)02-0185-04 |
| 收稿时间： | 2003/5/1 |
| 修稿时间： | 2003年5月1日 |
Improved target tracking algorithm for satellite laser communication system |
| |
| ZHOU Lin,AI Yong,GONG Yun-hua.Improved target tracking algorithm for satellite laser communication system[J].Infrared and Laser Engineering,2004,33(2):185-188. |
| |
| Authors: | ZHOU Lin AI Yong GONG Yun-hua |
| |
| Abstract: | Energy centroid algorithm is mostly used in center location of light spot, which is effected by the intensity distribution distortion of received light spot compared with that of light source. A distortion model is constructed, and a correcting factor is introduced. The related correcting algorithm is proposed, which modifies the conventional centroid algorithm. The correcting process applied in satellite laser communication is described. Computer simulation verifies that, under some factual circumstance, the angle deviations resulting from neglecting the asymmetrical attenuation of laser illumination can exceed 109″. Therefore, in satellite laser communication, correcting factor introduced improves the locating and tracking precision and the channel reliability. |
| |
| Keywords: | Satellite laser communication Intensity centroid Distortion Correcting factor |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
