| 非高斯畸变对星间光通信瞄准偏差的影响 |
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| 引用本文： | 谭立英, 谢宛青, 马晶, 等. 非高斯畸变对星间光通信瞄准偏差的影响[J]. 强激光与粒子束, 2011, 23(05). |
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| 作者姓名： | 谭立英 谢宛青 马晶 杨玉强 柳青峰 |
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| 作者单位： | 1.哈尔滨工业大学 航天学院, 哈尔滨 1 50001 ;;;2.哈尔滨理工大学 应用科学学院, 哈尔滨 1 50080 |
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| 摘 要： | 提出了一种针对星间激光链路反射式光学天线的非高斯畸变模型，利用该模型研究了波前畸变对系统瞄准偏差的影响，并且与高斯型波前畸变所得结果进行了对比。理论分析和仿真结果表明：对于高斯型和非高斯型畸变，系统的瞄准偏差都会随着畸变范围的增大而增大，随着畸变位置相对光束中心距离的增大先增大后减小。当畸变形状可以用其平均变化量来近似时，随着畸变深度的变化，瞄准偏差呈周期性变化趋势，振荡周期峰值的包络与畸变形状有关；对于不能简单用均值变化量代替其形状的畸变，随着畸变深度的增加，瞄准偏差的变化不具有周期性。仿真结果显示:对口径为0.25 m的反射式光学天线，当遮挡比为0.1时，如果畸变范围超过0.01 m×0.01 m，系统将会产生比较明显的瞄准偏差。
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| 关 键 词： | 激光通信 瞄准偏差 非高斯模型 小波 波前畸变 泽尼克多项式 |
Effect of non-Gaussian deformation on pointing error in inter-satellite laser communication systems |
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| tan liying, xie wanqing, ma jing, et al. Effect of non-Gaussian deformation on pointing error in inter-satellite laser communication systems[J]. High Power Laser and Particle Beams, 2011, 23. |
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| Authors: | tan liying xie wanqing ma jing yang yuqiang liu qingfeng |
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| Affiliation: | 1. School of Astronautics,Harbin Institute of Technology,Harbin 150001,China;;;2. Institute of Application Science,Harbin University of Science and Technology,Harbin 150080,China |
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| Abstract: | This paper proposes a model of non-Gaussian deformation in inter-satellite laser communication system, and then studies the effect of non-Gaussian deformation on pointing error based on the model in comparison with Gaussian model. Theoretical analyses and numerical simulations show that, pointing error will increase with increasing the scale of deformation, and as the distance from deformation to the center of the optical antenna increases, the pointing error will first increase and then decrease for both Gaussian and non-Gaussian models. If and only if the deformation can be well approximated by its root mean square value, the pointing error can change periodically with the variation in the depth of the deformation and the envelope of the peak value of the fluctuation depends on the origi |
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| Keywords: | laser communications pointing error non-gaussian model wavelet wave-front deformation zernike polynomials |
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