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flare triangulation

optiq. Hochzieltriangulation f (in flare triangulation the unknown ground point is replaced by a flare or flashing light carried aloft by an airplane or airborne vehicle); Leuchtzieltriangulation f (in flare triangulation the unknown ground point is replaced by a flare or flashing light carried aloft by an airplane or airborne vehicle)
sciences. Hochzieltriangulation f