Predicted Line Of Sight
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Predicted line of sight (PLOS) is a method of
missile guidance Missile guidance refers to a variety of methods of guiding a missile or a guided bomb to its intended target. The missile's target accuracy is a critical factor for its effectiveness. Guidance systems improve missile accuracy by improving its P ...
. In PLOS, the operator tracks the target with the missile launcher's onboard sights for a short period of time (typically 3–5 seconds). Software on the missile extrapolates from the gathered data to generate a predicted flight path required to intercept the moving target. When fired the missile uses inertial navigation to fly this course and hopefully engage the target either by direct contact or via proximity fuse detonating the warhead. This method is employed by anti-tank weapons such as the
NLAW The Saab Bofors Dynamics NLAW ( ), also known as the MBT LAW or RB 57, is a fire-and-forget, lightweight shoulder-fired, and disposable (single-use) line of sight (LOS) missile system, designed for infantry use. The missile uses a soft-laun ...
and FGM-172 SRAW. For a moving vehicle, the course will be a curve, the greater the angular velocity of the target from the launcher the smaller the radius of the curve. The curve is such that if the launcher had kept tracking the target after launch the missile would always be on the line between the launcher and target. This is what is attempted by '' command to line of sight'' (CLOS) but in the case of PLOS, no commands are issued post-launch and the target is not tracked by either the missile or the launcher. It is a
fire-and-forget Fire-and-forget is a type of missile guidance which does not require further external intervention after launch such as illumination of the target or wire guidance, and can hit its target without the launcher being in line-of-sight of the tar ...
technique.


See also

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Command guidance Command guidance is a type of missile guidance in which a ground station or aircraft relay signals to a guided missile via radio control or through a wire connecting the missile to the launcher and tell the missile where to steer to intercept its ...
*
Manual command to line of sight Manual command to line of sight (MCLOS or MACLOS) is a method for guiding guided missiles. With an MCLOS missile, the operator must track the missile and the target simultaneously and guide the missile to the target. Typically the missile is ste ...
(MCLOS) *
Fire-and-forget Fire-and-forget is a type of missile guidance which does not require further external intervention after launch such as illumination of the target or wire guidance, and can hit its target without the launcher being in line-of-sight of the tar ...
*
NLAW The Saab Bofors Dynamics NLAW ( ), also known as the MBT LAW or RB 57, is a fire-and-forget, lightweight shoulder-fired, and disposable (single-use) line of sight (LOS) missile system, designed for infantry use. The missile uses a soft-laun ...
* FGM-172 SRAW


References

Missile guidance {{missile-stub