降雨发生装置空间均匀性的研究  

Research on Spatial Uniformity of Rainfall Generator

作　　者：刘波[1] 王晓蕾[1] 康钊菁 苏腾[2] 翟东力 袁靖 

机构地区：[1]解放军理工大学气象海洋学院探测工程教研室,江苏南京211101 [2]酒泉卫星发射中心,甘肃酒泉732750 [3]太原航空仪表技术有限公司南京分公司,江苏南京211106

出　　处：《地球科学进展》2016年第8期820-828,共9页Advances in Earth Science

基　　金：国家自然科学基金项目"降水瞬态微物理特征测量仪"(编号:41327003)和"基于微波链路的区域降水反演"(编号:41475020)资助~~

摘　　要：为提高降雨发生装置的空间均匀性,对通过测试平台旋转提高降雨场空间均匀性的方法进行研究,设计、研制了旋转测试平台,解决了旋转过程中的信号传输问题,建立了转速与降雨发生装置空间均匀性之间的关系,结合翻斗式雨量计在降雨场中的测试与流量式雨量雨强标准装置的测试,论证了降雨发生装置作为雨量和雨强的测试环境是可行的。结果表明,随着转台转速的增加,降雨场的空间均匀性先增大后减小,且随着测试面积的减小,不同转速呈现出不一样的变化趋势,转台转速为1 RPM时,测试面积为1.6 m×1.6 m和1.2 m×1.2 m时,其均匀度系数最大(>95%);随着测试平台转速的增加,翻斗式雨量计累积降雨量和降雨强度之间的一致性增强,在转速为1 RPM和2 RPM时,翻斗式雨量计累积降雨量的最大偏差最小,为0.2 mm;流量式雨量雨强标准装置测试的累积降雨量的平均值与旋转测试平台在转速为1 RPM和2 RPM时测得的结果一致,充分说明通过旋转式测试工作平台可得到与流量式雨量雨强标准装置相一致的结果,证明了该方法提高降雨发生装置空间均匀性是可行的,且能得到累积降雨量的动态测量误差。In order to improve the spatial uniformity of rainfall generator to natural rainfall uniformity,according to the rotation of the test platform,a rotary test platform was designed and developed,and the slip-ring was used to solve the problem of signal transmission in the process of the rotation. Besides,the relationship between rotational speed and spatial uniformity of rainfall generator was established. The results of tipping-bucket rain gauge tested in rainfall field and flow type rainfall intensity standard device testing demonstrated that rainfall generator as the rainfall accumulation and rainfall intensity of the test environment was feasible. Results showed that with the increase of the rotate speed,spatial uniformity first increased,and then decreases,and with the decrease of the test area,different speed presented different trends. When the rotational speed was 1 RPM,test area was 1. 6 m × 1. 6m and 1. 2 m × 1. 2 m,its uniformity of rainfall generator reached maximum which was bigger than 95%; with the increase of the rotate speed,tipping-bucket rain gauge of RA and RI were of good consistency under the RPM 1 and RPM 2 and the RA maximum deviation reached minimum,0. 2 mm; the average of RA under flow type rainfall intensity standard device test consisted well with rotating test platform at speed RPM 1 and 2,which illustrated the rotary testing platform was consistent with the flow type rainfall intensity standard device. It showed that the method to improve the space uniformity of rainfall generator is feasible and it could find the dynamic difference of RA.

关 键 词：降雨发生装置 均匀性 旋转工作平台 流量式雨量雨强 

分 类 号：P426.623[天文地球—大气科学及气象学]