基于雹暴单体三维路径的X波段双偏振相控阵雷达探测强度评估

Intensity Evaluation of X-Band Dual Polarization Phased Array Radar Based on 3D Path of Hailstorm Cell

为研究X波段双偏振相控阵雷达探测雹暴的三维路径演变,本文基于雹暴单体三维路径的反射率因子数据,利用S波段双偏振业务雷达对X波段双偏振相控阵雷达探测强度进行定量评估,研究结果表明:X波段双偏振相控阵雷达具有体扫时间短,垂直方向上观测仰角多且同步性强等观测优势,可弥补S波段业务雷达探测盲区,提高观测结果的时效性。受衰减影响和探测盲区影响,近乎同位置的海沧S波段双偏振雷达与X波段双偏振相控阵雷达路径回波质心偏差较大。结合另外两部X波段双偏振相控阵雷达的回波质心高度观测进行评估,移动路径更接近S波段业务雷达,因此,多部X波段双偏振相控阵雷达的组网观测能够有效改善强回波的探测衰减问题。

In order to study the evolution of the three-dimensional path of the X-band dual-polarization phased array radar for detecting hailstorms, this paper uses the S-band dual-polarization operational radar to detect the detection intensity of the X-band dual-polarization phased array radar based on the reflectivity factor data of the three-dimensional path of a single hailstorm. Quantitative evaluation is carried out, and the research results show that the X-band dual-polarization phased array radar has the advantages of short body scan time, multiple observation elevation angles in the vertical direction, and strong synchronization, which can make up for the blind spot of S-band operational radar detection and improve the timeliness of observation results. Affected by attenuation and detection blind area, the path echo centroid deviation of the Haicang S-band dual-polarization radar and X-band dual-polarization phased array radar near the same location is relatively large. The height of the wave centroid is evaluated, and the moving path is closer to the S-band operational radar. Therefore, the networked observation of multiple X-band dual-polarization phased array radars can effectively improve the detection attenuation problem of strong echoes.