风场扰动的相干激光探测建模仿真研究

发布时间：2018-01-28 23:39

本文关键词： 相干激光风场扰动径向风速阻尼最小二乘法　出处：《光电子·激光》2016年09期 　论文类型：期刊论文

【摘要】：为了实时掌握机场上空的风场及扰动情况信息,保障航空飞行安全,提出一种运用相干激光探测风场扰动的方法。在解算背景风场矢量速度模型的基础之上,建立解算风场扰动矢量速度的模型。基于相干激光回波信号的径向速度仿真,为解算风场扰动矢量速度提供可靠有效的径向风速数据。在噪声干扰情况下,采用阻尼最小二乘算法解算风场扰动矢量速度,并对比分析在不同扫描方位角间隔下解算得到的风场扰动矢量速度。仿真结果表明,扫描方位角间隔越小解算结果误差越小,当扫描方位间隔小于60°时,风场速度扰动量均方误差(MSE)小于1 m/s,水平方向扰动量小于4°。
[Abstract]:In order to grasp the information of the wind field and disturbance over the airport in real time and ensure the aviation flight safety, a method of detecting the wind field disturbance by using coherent laser is proposed, which is based on the vector velocity model of the background wind field. Based on the radial velocity simulation of coherent laser echo signal, this paper provides reliable and effective radial wind speed data for solving wind field disturbance vector velocity. The damping least square algorithm is used to calculate the velocity of wind field disturbance vector, and the velocity of wind field disturbance vector is compared and analyzed under different scanning azimuth intervals. The simulation results show that the velocity of wind field disturbance vector is calculated. When the scanning azimuth interval is less than 60 掳, the mean square error (MSE) of wind velocity disturbance is less than 1 m / s and the horizontal direction disturbance is less than 4 掳.
【作者单位】：电子工程学院脉冲功率激光技术国家重点实验室电子制约技术安徽省重点实验室;
【基金】：国家自然科学基金(61271353) 安徽省自然科学基金(1308085QF123)资助项目
【分类号】：V321.212
【正文快照】： 1引言大气风场是大气水循环、大气碳循环、海气交换和气溶胶运输的主要动力,大气风场的精确测量对气象科学、数值天气精确预报、风能发电、机场风切变预警和飞机尾涡监测等有着极其重要的作用[1,2]。全光纤相干多普勒测风激光雷达具有高精度、高时空分辨率、高探测灵敏度、高

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