Title :
Spatial correlation function of the sky wave for use in space diversity reception
Author :
Ghuniem, Atef M. ; Osman, Nasser K.
Author_Institution :
Fac. of Eng., Suez Canal Univ., Port Said, Egypt
Abstract :
Fading is a serious problem in HF communication. It is caused primarily by the random irregularities in the refractive index of the ionosphere. One of the successful solutions to this problem is the space diversity reception. In this work the spatial correlation function of the received signal fluctuations is derived using geometric optics and single scattering approximations. Then the correlation function is used to calculate the required distance between the two receiving antennas to obtain uncorrelated signals. The results provide the base for the optimum design of the space diversity system
Keywords :
HF radio propagation; antenna arrays; diversity reception; electromagnetic wave scattering; fading; geometrical optics; ionospheric electromagnetic wave propagation; receiving antennas; 9.5 MHz; HF communication; distance; fading; geometric optics; optimum design; random irregularities; received signal fluctuations; receiving antennas; refractive index; single scattering approximations; sky wave; space diversity reception; spatial correlation function; Diversity reception; Fading; Fluctuations; Geometrical optics; Ionosphere; Optical refraction; Optical scattering; Optical variables control; Receiving antennas; Refractive index;
Conference_Titel :
Radio Science Conference, 1999. NRSC '99. Proceedings of the Sixteenth National
Conference_Location :
Cairo
Print_ISBN :
977-5031-62-1
DOI :
10.1109/NRSC.1999.760943
