机载微波辐射计测云中液态水含量 (I):仪器和标定  

Measurement of Column Cloud Liquid Water Content by Airborne Upward-Looking Microwave Radiometer (I): Instrument and Its Calibration

作　　者：雷恒池[1] 魏重[1] 沈志来[1] 张晓庆[1] 金德镇 谷淑芳 李茂伦 张景红 

机构地区：[1]中国科学院大气物理研究所,北京100029 [2]吉林省人工降雨防雹办公室,吉林长春130062

出　　处：《高原气象》2003年第6期551-557,共7页Plateau Meteorology

基　　金：国家自然科学基金项目(40275002);吉林省人工影响天气开放试验室部分基金资助

摘　　要：简要介绍为研制机载对空测云微波辐射计所做的预研究,结果确认了研制这样的单频机载微波辐射计的可行性,并明确了仪器的技术难点,给出了针对技术难点提出的设计方案和技术指标。本文还介绍了对仪器进行灵敏度测试的实验方法和结果。实验室测试和晴空飞行测试表明,在一定的条件下,仪器灵敏度指标达到0.2K;还较详细地介绍了几种实用的标定方法,并讨论了它们的适用范围和不确定性。The prescheme, design and performance of an airborne upwardlooking microwave radiometerto measure column suppercooled cloud liquid water content as well as total column cloud liquid water content are introduced. The prescheme suggests the feasibility of a single frequency radiometer for this purpose and focuses some technical difficulties of making suchinstrument, that are important references in design and performance of the instrument. The test methods of instrumental sensibility and its results are shown. The tests both in laboratory and on the airplane suggest that under certain conditions the tested sensibility can be less than or equal to 0.2K. In addition, some feasible methods of instrumental calibration are introduced in detail, and their applicable condition as well as their uncertainty are discussed.

关 键 词：机载微波辐射计 云液水 云过冷水 标定 灵敏度 

分 类 号：P414[天文地球—大气科学及气象学]