Title :
Microwave attenuation measurements in atmospheric water vapor estimate
Author :
Cuccoli, F. ; Facheris, L. ; Giuli, D.
Author_Institution :
Dipt. di Elettronica e Telecomunicazioni, Universita di Firenze, Italy
Abstract :
We describe an active system to estimate atmospheric water vapor based on normalized differential attenuation measurements in the 18-22 GHz range. These measurements can be made using a transmission system based on simple amplitude modulated signals. Using a microwave propagation model for atmosphere and radiosonde data, we simulated the atmospheric attenuation measurements. The correlation between the atmospheric water vapor content and the normalized differential attenuation is shown. The columnar water vapor content can be well estimated with direct measurements at 19 GHz. The simulated data set was generated using one year of data of the radiosonde site of S. Piero Capofiume (Bologna, Italy)
Keywords :
atmospheric humidity; electromagnetic wave absorption; humidity measurement; tropospheric electromagnetic wave propagation; 18 to 22 GHz; Bologna; Italy; S. Piero Capofiume; active system; amplitude modulated signals; atmospheric attenuation measurements; atmospheric water vapour content; atmospheric water vapour estimate; columnar water vapour content; microwave attenuation measurements; microwave propagation model; normalized differential attenuation measurements; transmission system; tropospheric water vapor content; Absorption; Amplitude modulation; Atmosphere; Atmospheric measurements; Atmospheric modeling; Attenuation measurement; Microwave measurements; Microwave propagation; Optical attenuators; Optical receivers;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.977043
