Title :
Two-frequency two-time correlations and spectra for an ionospheric reflection channel
Author :
Lin, K.H. ; Yeh, K.C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
A wideband HF oblique experiment over the ionospheric reflection channel has been conducted. The experiment measures the complex transfer function simultaneously at six frequencies selected from 800 discrete frequencies in the range of 5 to 15 MHz in the west-east path 1400 km long. Based on the measured transfer function, the two-frequency two-time correlation function and the power spectral density are computed. Various statistics, such as correlation time and correlation bandwidth are deduced, and their evolution with time is studied
Keywords :
correlation methods; electromagnetic wave reflection; ionospheric electromagnetic wave propagation; radiowave propagation; spectral analysis; telecommunication channels; 1400 km; 5 to 15 MHz; HF; complex transfer function; correlation bandwidth; correlation time; ionospheric reflection channel; power spectral density; statistics; two-frequency two-time correlation function; wideband HF oblique experiment; Broadband antennas; Density measurement; Fading; Frequency measurement; Pulse measurements; Reflection; Statistics; Transfer functions; Transmitters; Wideband;
Conference_Titel :
Military Communications Conference, 1992. MILCOM '92, Conference Record. Communications - Fusing Command, Control and Intelligence., IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0585-X
DOI :
10.1109/MILCOM.1992.244068
