| 时变湍流对动态移动光斑定位精度的影响 |
| |
| 引用本文： | 沈宝良,孙建锋,周煜,濮莉莉,李兵,刘立人.时变湍流对动态移动光斑定位精度的影响[J].中国激光,2011(8). |
| |
| 作者姓名： | 沈宝良 孙建锋 周煜 濮莉莉 李兵 刘立人 |
| |
| 作者单位： | 中国科学院上海光学精密机械研究所; |
| |
| 基金项目： | 国家自然科学基金(60907006)资助课题 |
| |
| 摘 要： | 为了研究时变湍流对跟瞄过程中动态平移的光斑定位和跟踪精度的影响,采用改进的逆傅里叶变换方法构造了体现大气湍流特性的随机相位屏,模拟仿真分析了不同强度时变湍流影响下光斑动态平移时探测器感受到的光斑质心与光斑实际质心之间的跟踪偏差、定位偏差与光斑在探测器上位置之间的关系,以及湍流强度对光斑质心定位精度的影响,给出了统计偏差曲线。结果表明,在时变大气湍流的影响下,光斑整体动态平移过程中实际质心的移动距离与接收端探测器感受到的光斑质心移动距离存在一个跟大气湍流强度成正比的偏差。动态平移过程中光斑质心的平移跟踪偏差与定位精度、大气湍流强度以及光斑在接收终端探测器上的位置有关。
|
| 关 键 词： | 光通信 自由空间激光通信 电荷耦合器件 大气湍流 仿真 数值相位屏 |
Influence of Time-Varying Atmospheric Turbulence to Facular Orientation Deviation in Dynamic Process |
| |
| Shen Baoliang Sun Jianfeng Zhou Yu Pu Lili Li Bing Liu Liren.Influence of Time-Varying Atmospheric Turbulence to Facular Orientation Deviation in Dynamic Process[J].Chinese Journal of Lasers,2011(8). |
| |
| Authors: | Shen Baoliang Sun Jianfeng Zhou Yu Pu Lili Li Bing Liu Liren |
| |
| Affiliation: | Shen Baoliang Sun Jianfeng Zhou Yu Pu Lili Li Bing Liu Liren(Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China) |
| |
| Abstract: | In order to study the influence of time-varying turbulence to facular orientation precision when the facula is moving during pointing and tracking process,a random phase screen is generated by using modified inverse Fourier transform to simulate the atmospheric turbulence.And then the orientation deviation of the facular barycenter,the relation between the deviation and the facular position in the detector and the orientation precision of the facula are analyzed under different atmospheric turbulence intens... |
| |
| Keywords: | optical communications free-space laser communication charge-coupled device atmospheric turbulence simulation random phase screen |
| 本文献已被 CNKI 等数据库收录！ |
