Experimental Studies of the Correlation Bandwidth of the Tropospheric Scatter Medium at Five Gigacyles

An experimental program has been conducted to collect information concerning the correlation bandwidth of the tropospheric scatter medium in the 5-Gc region. By transmitting bursts on five different frequencies, data were obtained on separations of 1.5, 3.0, 4.5, and 6.0 Mc for a 100-mile path. An IBM 7090 computer was programmed to calculate the cross-correlation coefficients between the pairs of frequencies. The experimental results are in agreement with theory, and indicate that frequencies as closely spaced as 1.5 Mc can have correlation coefficients of the order of 0.4.