X波段双通道同时收发式多普勒偏振天气雷达

Dopple-Polarization Weather Radar of Simutaneous Transmissions and Receivers of X-Band Double-Channel

以我们研制的X波段多普勒偏振天气雷达为基础,介绍一种双通道同时收发式多普勒偏振雷达技术,并对其优缺点和应用问题进行讨论。这是一部真正意义上的多参数雷达,它可同时获取云和降水的强度信息(ZH)、多普勒信息(平均径向速度V,谱宽W)和偏振信息(差反射率ZDR,差传输相移ΦDP及比相差KDP和相关系数ρHV)。这些信息反映了云和降水粒子的范围、大小、运动变化和相态的不同,是全面了解云和降水特别是灾害性天气的形成机理及其微物理变化过程的较好工具。它可广泛用于大气物理研究、人工影响天气、暴洪监测和临近天气预报等领域,对于提高云和降水物理研究水平和提高防灾减灾能力都有重要意义。

The Doppler-polarization weather radar have many kinds of types in its development. They are divided circular polarization, elliptical polarization and dual-linear polarization according to there shape of transmitting electric wave and are divided x-band, c-band, s-band as well as ram-band according wavelength. This paper introduce one kind of simultaneous horizontal and vertical channel transmission technology that is used in our new development radar. It is a actual multi-parameters weather radar and could obtain the informations about ZH, V, W, ZDR, φDP, KDP and ρHV of cloud and precipitation at same time. These information are useful for the research of cloud and precipitation physics as well as weather modification. It will be useful for the development and application of polarization radar in our country.