【摘要】 <正> 一、引言 为了实现有云天气大气温度湿度和压力层结的地面微波遥感探测,我们在75年与上无23厂北京大华仪器厂合作研制成功两台不同类型的5毫米波段微波辐射计后,76年又开始了1.35厘米和8毫米波段微波辐射计的试制。 氧分子在5毫米波段有一吸收带,5.67毫米(52.9GHz)的仪器是用来测量大气氧分子的更多还原

【Abstract】 In this paper, a compensatory Dicke-type microwave radiometer is described. It provides a passive ground-based radiometer for measurements of thermal emission by water vapor. The frequency is fixed in 22.235 Ghz and allows an elevation scan from 0° to 90°.We discuss the components and charactistics in detail.The results indicate that the double-sided noise factor of radiometer is 9.6 db; the integration time is 3.5 sec.; radiometric sensitivity (△Tmin) is 0.3° K or less.更多还原