【作者】 陈纯毅； 杨华民； 佟首峰； 刘云清； 韩成； 刘鹏；

【Author】 CHEN Chun-yi1, YANG Hua-min1, TONG Shou-feng2, LIU Yun-qing2,HAN Cheng1, LIU Peng2 (1.College of Computer Science & Technology, Changchun University of Science and Technology, Changchun 130022, China; 2.College of Photo-electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China )

【机构】 长春理工大学计算机科学技术学院； 长春理工大学光电工程学院；

【摘要】 在相距600m的两地进行了静态激光大气传输实验,并对接收到的光强和光束到达角起伏进行记录。以每10min所记录的数据作为样本,计算出光强起伏方差和到达角起伏方差,并根据理论孔径平滑因子计算出点接收时的光强起伏方差,再分别根据光强起伏方差和到达角起伏方差计算出大气折射率结构常数。最后,得到一天之内大气折射率结构常数的变化曲线,并分析得出大气折射率结构常数在早晨和傍晚存在极小值。更多还原

【Abstract】 A static experiment of laser propagation in atmosphere is presented at two places of 600 meters apart, and the fluctuation data of received intensity and angle of arrival (AOA) of beam are recorded. The data recorded in every 10 minutes are used as sampled data to compute fluctuation variance of intensity and AOA. According to the aperture averaging factor computed theoretically, the intensity fluctuation variance of a point receiver is computed, and then the structure constant of refractive index is computed using intensity fluctuation variance and AOA fluctuation variance respectively. Finally, it yields the curve of structure constant of refractive index in a day, and a conclusion is drawn that there are minimums of structure constant of refractive index in the periods of morning and dusk.更多还原