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湍流大气中激光回波到达角起伏

张逸新

张逸新. 湍流大气中激光回波到达角起伏[J]. 激光技术, 1997, 21(1): 25-29.
引用本文: 张逸新. 湍流大气中激光回波到达角起伏[J]. 激光技术, 1997, 21(1): 25-29.
Zhang Yixin. Angle-of-arrival fluctuation of reflected laser beam in atmospheric turbulence[J]. LASER TECHNOLOGY, 1997, 21(1): 25-29.
Citation: Zhang Yixin. Angle-of-arrival fluctuation of reflected laser beam in atmospheric turbulence[J]. LASER TECHNOLOGY, 1997, 21(1): 25-29.

湍流大气中激光回波到达角起伏

详细信息
    作者简介:

    张逸新,男,1956年4月出生。教授。目前主要从事激光大气传输和图象处理方面的研究工作。

Angle-of-arrival fluctuation of reflected laser beam in atmospheric turbulence

  • 摘要: 本文运用几何光学近似,导出了湍流大气中束状反射回波的到达角起伏表达式.结果表明:当准直光束和聚焦于反射器的光束照明后向反射器时,回波不存在到达角起伏,而当准直光束照明平面反射器时,到达角起伏是相同条件下视线大气传输光束到达角起伏的一倍.
    Abstract: Based on geometrical optics formulation,this paper deals with the problem of angle-of-arrival influence of reflected beam by a reflector,and derived the expression of angle-of-arrival variance.The expression shows that:(1)the variance σr2 of angle-of-arrival is equal to zero,when the back reflector is illuminated by the beam of collimated or focused or spherical light beam;(2)the variance σr2 of angle-of-arrival is twice time of the variance of the line of sight path propagating beam when the specular reflector is illuminated by collimated or spherical light beam.
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出版历程
  • 收稿日期:  1995-09-26
  • 修回日期:  1995-09-26
  • 发布日期:  1997-01-24

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