Line of sight (missile)
In missile guidance, line of sight (LOS) is the straight line vector (with direction and length) between the missile and the target. At the end of the engagement, the LOS distance will be zero (see command to line-of-sight).
In pursuit guidance, the missile is steered so that the velocity vector of the missile always points at the target, i.e. has the direction of the line of sight. Proportional navigation tries to maintain a constant LOS.
Literature
- Tactical and Strategic Missile Guidance, Paul Zarchan, American Institute of Aeronautics and Astronautics Inc.
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