hyperbolic position line

hyperbolic position line
Position lines obtained from NAVAIDs (navigational aids) such as CONSOL, LORAN (long-range navigation), and DECCA are hyperbolic in shape. These normally are combined with another position line of the same type to obtain a fix. These normally are plotted on special charts.
P1 and P2 are position lines.

Aviation dictionary. 2014.

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