Advances and applications in low-power phased array X-band weather radars
Advances and applications in low-power phased array X-band weather radars
复制标题
低功率相控阵X波段气象雷达的进展及应用
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
A. Sneddon
中科院分区：
文献类型：
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作者：
P. Kollias;D. McLaughlin;S. Frasier;M. Oue;E. Luke;A. Sneddon
低成本、低功耗的x波段相控阵雷达（LPAR）是未来部署分布式短程雷达网络的一种使能技术。与目前较大的远程国家雷达网络相比，这种网络提供了对大气和空中事件进行更高和更低高度监视的潜力。二维控制（相位控制，没有电机或其他运动部件）相控阵雷达是由多个子系统组成的复杂系统，包括数千个发送/接收（T/R）通道，波束控制计算机，热管理。由于这种复杂性和相关的成本，相控阵技术在历史上没有被用于气象和空中交通管制雷达。对传统上为远程雷达保留的频谱的竞争，正促使各国寻求新的国家空中监视方法；这在过去十年中推动了对二维x波段LPAR的研发投资，以至于原型系统现在出现在几个应用程序设置中，包括首次出现在大学研究设置中。二维高速（无惯性）波束导向，结合双极化、可编程/自适应波形，以及将多个雷达组合成网络的能力，为危险风暴预报和响应、云物理、水资源管理、监测危险羽流的运动和扩散以及其他领域带来了新的大气科学研究机会。
Low-cost, low-power X-band phased array radar (LPAR) is an enabling technology for future deployment of distributed short-range radar networks. Such networks offer the potential for superior and lower altitude surveillance of atmospheric and airborne events compared with today's larger, long range national radar networks. Two dimensionally steered (phase-phase steering, without motors or other moving parts) phased array radars are complex systems comprising multiple subsystems including several thousand transmit/receive (T/R) channels, beam steering computers, thermal management. Owing to this complexity and the associated cost, phased array technology has not historically been used in weather and air traffic control radars. Competition for the frequency spectrum traditionally reserved for long-range radars is motivating the search for new approaches to national air surveillance; this has motivated R&D investment in two-dimensional X-band LPAR over the past decade, to the point where prototype systems are now emerging in several application settings including, for the first time, the university research setting. Two-dimensional high-speed (inertia-less) beam steering combined with dual polarization, programmable/adaptive waveforms, and the ability to combine multiple radars into networks is leading to new atmospheric science research opportunities related to hazardous storm forecasting and response, understanding cloud physics, water resource management, monitoring the movement and dispersal of hazardous plumes, and other areas.