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分析了雨的空间分布特性,对现阶段降雨测量雷达的现状进行了调研,提出了一种地球同步轨道星载降雨测量雷达设计方法。该雷达采用Ka频段工作频率,采用螺旋扫描实现5 000km直径的圆区域覆盖,可实现0.3mm/h以上强度降雨的探测。同时,地球同步轨道降雨测量雷达可实现定点观测,通过3~4颗卫星组网即可实现全球覆盖。该雷达是实现全球气候与环境变化监测,军事战场作战环境综合探测的必要装备。
The spatial distribution characteristics of rain are analyzed. The present situation of rainfall measurement radar is investigated. A design method of spaceborne orbit satellite rainfall measurement radar is proposed. The Ka-band frequency of the radar, the use of helical scanning to achieve a circular area of 5 000 km coverage, can achieve 0.3 mm / h above the intensity of rainfall detection. At the same time, geosynchronous orbit rainfall measurement radar can achieve fixed-point observation, through 3 to 4 satellite networking can achieve global coverage. The radar is necessary equipment for global monitoring of climate and environmental changes and integrated detection of operational environments in military battlefields.