Definition

A line indicating a series of possible POSITIONS of a craft, determined by OBSERVATION or measurement. Also called position line. See CELESTIAL LINE OF POSITION, CIRCLE OF POSITION, COURSE LINE, ELECTRONIC LINE OF POSITION, FIX, HYPERBOLIC LINE OF POSITION, LATITUDE LINE, LEADING LINE, LONGITUDE LINE, RETIRED LINE OF POSITION, SONIC LINE OF POSITION, SPEED LINE, SUMNER LINE, SURFACE OF POSITION, VISUAL LINE OF POSITION.