Title :
Propagation studies on smooth-earth diffraction path
Author :
Tewari, R.K. ; Jassal, B.S. ; Roy, M.N.
Author_Institution :
Defence Electron. Appl. Lab., Dehradun, India
Abstract :
In conformity with CCIR study program IA-3/5 (1986), propagation measurements were conducted on a smooth-earth diffraction path (35 km) for a period of one year at 73.2 MHz frequency on a round-the-clock basis. The results of this study are presented in the form of diffraction loss, its temporal variation, and fade depths as a function of mean monthly values of vertical refractivity gradient. The experimental results have been compared with CCIR prediction methods and show good agreement.<>
Keywords :
electromagnetic wave diffraction; fading; radiowave propagation; 35 km; 73.2 MHz; CCIR prediction methods; VHF; diffraction loss; fade depths; propagation measurements; radiowave propagation; smooth-earth diffraction path; temporal variation; vertical refractivity gradient; Clocks; Diffraction; Earth; Frequency measurement; Laboratories; Meteorology; Monitoring; Prediction methods; Radio transmitters; Refractive index;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1988. AP-S. Digest
Conference_Location :
Syracuse, NY, USA
DOI :
10.1109/APS.1988.94326
