Correlation effects on direction-finding probability regions
P. J. D. Gething · Proceedings of the Institution of Electrical Engineers · 1967
For an idealised model of a fix obtained by a network of direction finders on a narrow baseline, it is shown that the major axis of the probability ellipse is decreased, and the minor axis is increased, when positive correlation is present between bearing errors. The area of the ellipse is increased if there are three or more bearings, and the correlation is small.