Abstract

In real cases of direction finding sites the direct wave, which propagates undisturbed between the source of interest and the direction finder, is superposed by a lot of coherent waves. This causes stationary fields of interference and often results in large bearing errors. This report shows by means of mathematical statistics that the bearing errors in direction finding of transient sources caused by unfavourable surrounding conditions can considerably be reduced through the use of a broadband evaluation. In order to obtain the direction of incidence the time-averaged energy-flow density is determined and evaluated.

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