| 二维扩展信标的数值模拟研究 |
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| 引用本文： | 付怀龙,涂遗,闫伟,杜太焦.二维扩展信标的数值模拟研究[J].激光与红外,2016,46(11):1384-1388. |
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| 作者姓名： | 付怀龙 涂遗 闫伟 杜太焦 |
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| 作者单位： | 清华大学工程物理系,北京100084;西北核技术研究所,陕西 西安710024 |
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| 摘 要： | 通过在信标初始光场上附加均匀分布于(-π,+π)的随机相位,提出了一种二维扩展信标大气传输数值模拟方法,并验证了其可行性。不同于卷积法与逐点扫描法,该方法具有不依赖信标强度特性、有效反映大气湍流对信标成像影响以及计算成本相对固定等优点。针对不同尺寸的扩展信标,获得了扩展信标在Shack-Hartmann传感器焦平面上的成像,分析了真空传输以及大气湍流传输条件下,所需的最小随机实现次数。为进一步研究扩展信标对自适应光学系统校正效果的影响奠定了模型基础。
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| 关 键 词： | 自适应光学 大气传输 扩展信标 相位调制 最小随机实现次数 |
Numerical simulation research for a 2D extended beacon |
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| FU Huai-long,TU Yi,YAN Wei,DU Tai-jiao.Numerical simulation research for a 2D extended beacon[J].Laser & Infrared,2016,46(11):1384-1388. |
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| Authors: | FU Huai-long TU Yi YAN Wei DU Tai-jiao |
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| Abstract: | By adding a random phase to the initial field of a beacon,an atmospheric transmission numerical simulation model of 2D extended beacon model is presented,and its feasibility is verified.For extended beacons with different sizes,the images of extended beacons in focal plane Shack-Hartmann sensor are obtained,and the required number of minimum random realizations is analyzed under vacuum and atmosphere turbulence transmission.This lays a foundation for further studying the influence of extended beacons on adaptive optics system correction. |
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| Keywords: | adaptive optics atmospheric transmission extended beacon phase modulation the number of minimum random realizations |
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