微波遥感大气湿度层结的研究

STUDIES ON THE GROUND-BASED MICROWAVE RADIOMETRY AND ITS MEASUREMENTS OF THE ATMOSPHERIC HUMIDITY PROFILE AND TOTAL WATER VAPOUR CONTENT

摘要: 根据大气噪音谱,用接收1.35cm微波噪音,遥感大气湿度层结.研制了1.35cm微波辐射计(v=22.235Gc).用迭代法反演大气湿度层结,在野外实验中与无线电探空仪对比,比湿相差的百分比,均方根偏差在700mb以下20%,650mb以下29%;大气中水汽总含量的测量,两者相差为3%.为了遥感雨中含水量,研制3cm微波辐射计(v=9.37Gc).并测试了大气噪音.

Abstract: We constructed 1.35cm-radiometry (22.235 Gc).Using the xeception of 1.35 cm atmospheric noise,the humidity profile and total vapour content in the atmosphere were obtained,In field test,as compared with radiosonde,the rms deviation of total vapour content was 3%,the rms deviations of specific humidity were 17.2% below 3km,and 22.4% below 5 km.