风廓线雷达主要用于测量晴空大气湍流的速度、强度等参量,能够实时提供大气的三维风场信息.文中从大气湍流特性出发,分析了晴空大气探测对雷达天线性能的要求;在满足Fresnel长度要求下分析了对雷达天线波束宽度的限制条件,以及雷达天线副瓣对探测结果的影响.实际探测结果表明,理论分析与实际测量结果是一致的.

Wind profiler is used for measuring the velocity and the intensity of the clear-air turbulence,which can provide the three-dimensional wind profile continuously.The limitation of the beam width of wind profiler antenna under the condition of fresnel length and the effect of the sidelobe for the detection result are analyzed.It is shown that the theoretical analysis is in accordance with the actual detection result.

TN959.4