The Investigation of Microwave Precipitation Measurement at 37GHz

In this paper we use a 10-layer radiation transfer model to systematically investigate the relation between brightness temperature and the rainfall rates at 37 GHz, including various viewing of microwave (MW) remote sensing and different surface condition, with main focus on the influence of the structure of ice-phase layer. The results show that the quantitative rainfall measurement can not be reliably obtained over the land from spuceborne radiometer at this wavelength and the structures of ice layer are very important in determining the "observed" brightness temperature for the spaceborne MW remote sensing.     

雷电单站定位系统

本文介绍数字化的VLF雷电单站定位系统，本系统以Wait的波导理论为基础，测量磁—电场的相位差确定测站与源的距离。系统主要由接收机、BC-5波形存贮液器、H-89微型计算机及控制软件包组成。其性能较好:快速（最高记录速度为4兆字节/秒）、灵活（功能可用软件改变）、宽带（100赫兹—200千赫兹）。利用此系统观测到VLF频谱，并作了单站定位的初步尝试。