西北高原地区光学湍流的观测与分析

发布时间：2018-03-02 10:53

  本文关键词： 大气光学湍流 Hufnagel-Valley模式 大气相干长度 等晕角　出处：《红外与激光工程》2016年S1期 　论文类型：期刊论文

【摘要】：天文选址的决策和激光传输系统的设计和应用需要掌握大气光学湍流的时空变化规律。利用HTP-2型温度脉动仪测量近地面湍流,用大气相干长度仪测量整层湍流积分效应。分析折射率结构常数C2n的实测数据,得到近地面光学湍流月平均和季平均的变化规律。分析了早晚两个"转换时刻"不同参数的变化规律。根据广义Hufnagel-Valley模式反演得到夜间、白天及"转换时刻"整层湍流廓线,比较了不同时刻湍流廓线的特点。在连续多年实测数据的基础上所得结论全面可靠,具有重要的工程参考价值。
[Abstract]:The decision of astronomical location and the design and application of laser transmission system need to master the temporal and spatial variation of atmospheric optical turbulence. The near-surface turbulence is measured by HTP-2 temperature pulsator. The integral effect of whole layer turbulence is measured by atmospheric coherent length meter. The measured data of refractive index structure constant C2n are analyzed. The variation law of the monthly and quarterly mean of optical turbulence near the ground is obtained. The variations of the different parameters of the two "transition times" in the morning and evening are analyzed. Based on the inversion of the generalized Hufnagel-Valley model, the turbulent profiles of the whole layer at night, during the day and at the "transition time" are obtained. The characteristics of turbulent profiles at different times are compared. Based on the measured data for many years, the conclusions are comprehensive and reliable, and have important engineering reference value.
【作者单位】： 中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室;中国科学技术大学研究生院科学岛分院;中国科学技术大学环境科学与光电技术学院;
【基金】：国家自然科学基金(41205023,41375017)
【分类号】：O357.5;P427.1
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本文编号：1556224