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基于差分像运动法的机载平台大气湍流参数测量

Measurement of Atmospheric Turbulence Parameters on Airborne Platform Based on Differential Image Motion Method

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摘要

大气湍流参数是评价大气信道对空间激光通信系统性能影响的重要依据。根据机载平台的运动特点,采用差分像运动法并利用夏克-哈特曼传感器与指向、捕获、跟踪伺服单元等设备,在加格达奇地区开展了不同海拔高度下大气湍流参数的分层测量实验。结果表明,在Kolmogorov湍流条件下,该地区日间大气湍流强度随海拔高度的增加而减弱,并在该变化趋势上叠加了大气湍流强度的随机起伏;大气覆盖逆温层顶层海拔高度范围为2.2~2.8 km,海拔高度为3.5 km的大气相干长度的变化范围为10~26 cm。该研究为机载激光通信系统的性能分析提供了重要的参考。

Abstract

Atmospheric turbulence parameters are the important bases to evaluate the effect of atmospheric channel on space laser communication system performance. According to the motion characteristic of airborne platform, the atmospheric turbulence parameter stratified measurement experiments are carried out at different altitudes in Jagdaqi area with the differential image motion method, and these experiments are combined with Shack-Hartmann sensor and pointing, acquisition, tracking servo units. Results show that the daytime atmospheric turbulence intensity in this region reduces with the increase of altitude, and random fluctuation of atmospheric turbulence intensity is superimposed on the changing trend under the condition of Kolmogorov turbulence. The range of top layer altitude of atmospheric capping inversion layer is 2.2-2.8 km. At the altitude of 3.5 km, the atmospheric coherence length varies from 10 cm to 26 cm. The study provides an important reference for the performance analysis of airborne laser communication system.

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中图分类号:P427.1;TN929.1

DOI:10.3788/cjl201744.0304002

所属栏目:测量与计量

基金项目:教育部博士点基金(20132216110006)

收稿日期:2016-10-20

修改稿日期:2016-11-27

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作者单位    点击查看

张 雷:长春理工大学光电工程学院, 吉林 长春 130022长春理工大学空地激光通信技术国防重点学科实验室, 吉林 长春 130022
赵 馨:长春理工大学电子信息工程学院, 吉林 长春 130022
佟首峰:长春理工大学光电工程学院, 吉林 长春 130022长春理工大学空地激光通信技术国防重点学科实验室, 吉林 长春 130022
李 勃:长春理工大学光电工程学院, 吉林 长春 130022
姜会林:长春理工大学光电工程学院, 吉林 长春 130022长春理工大学空地激光通信技术国防重点学科实验室, 吉林 长春 130022

联系人作者:张雷(zhanglei_cust@163.com)

备注:张 雷(1980—),男,博士研究生,讲师,主要从事空间激光通信、大气参数测量等方面的研究。

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引用该论文

Zhang Lei,Zhao Xin,Tong Shoufeng,Li Bo,Jiang Huilin. Measurement of Atmospheric Turbulence Parameters on Airborne Platform Based on Differential Image Motion Method[J]. Chinese Journal of Lasers, 2017, 44(3): 0304002

张 雷,赵 馨,佟首峰,李 勃,姜会林. 基于差分像运动法的机载平台大气湍流参数测量[J]. 中国激光, 2017, 44(3): 0304002

被引情况

【1】张雷,李勃,赵馨,佟首峰,姜会林. 大气湍流对空间激光通信跟踪系统的影响. 光子学报, 2017, 46(9): 901001--1

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