Predicted line of sight (PLOS) is a method of missile targeting. In PLOS, the operator tracks the target with the missile launcher's onboard sights for a short period of time (3-5 seconds). Software on the launcher extrapolates from the data gathered, producing a prediction of the route 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. [1] The method is used by the NLAW and FGM-172 SRAW anti-tank weapon.
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 technique.
An anti-tank guided missile (ATGM), anti-tank missile, anti-tank guided weapon (ATGW) or anti-armor guided weapon is a guided missile primarily designed to hit and destroy heavily armored military vehicles. ATGMs range in size from shoulder-launched weapons, which can be transported by a single soldier, to larger tripod-mounted weapons, which require a squad or team to transport and fire, to vehicle and aircraft mounted missile systems.
Semi-automatic command to line of sight (SACLOS) is a method of missile command guidance. In SACLOS, the operator must continually point a sighting device at the target while the missile is in flight. Electronics in the sighting device and/or the missile then guide it to the target.
Manual command to line of sight is a method for guiding guided missiles.
The FGM-148 Javelin, or Advanced Anti-Tank Weapon System-Medium (AAWS-M), is an American-made man-portable anti-tank system in service since 1996, and continuously upgraded. It replaced the M47 Dragon anti-tank missile in US service. Its fire-and-forget design features automatic infrared guidance, allowing the user to seek cover immediately after launch, in contrast to wire-guided systems, like the system used by the Dragon, which require a user to guide the weapon throughout the engagement. The Javelin's high-explosive anti-tank (HEAT) warhead can defeat modern tanks by top-down attack, hitting them from above, where their armor is thinnest, and is also useful against fortifications in a direct attack flight.
The BGM-71 TOW is an American anti-tank missile. TOW replaced much smaller missiles like the SS.10 and ENTAC, offering roughly twice the effective range, a more powerful warhead, and a greatly improved semi-automatic command to line of sight (SACLOS) that could also be equipped with infrared cameras for night time use.
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 Probability of Guidance (Pg).
Shoulder-fired missile, shoulder-launched missile or man-portable missile, among other variants, are common slang-terms to describe high-caliber shoulder-mounted weapons systems – that is: weapons firing large heavy projectiles ("missiles"), typically using the backblast principle, which are small enough to be carried by a single person and fired while held on one's shoulder. The word "missile" in this context is used in its original broad sense of a heavy projectile, and encompasses all shells and rockets, guided or unguided. A more formal variant is simply shoulder-fired weapons system and the like.
The M47 Dragon, known as the FGM-77 during development, is an American shoulder-fired, man-portable anti-tank guided missile system. It was phased out of U.S. military service in 2001, in favor of the newer FGM-148 Javelin system.
The LAW 80, regularly referred to as LAW 94 in British service, is a man-portable, disposable anti-tank weapon previously used by the British Army and a few other militaries.
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-launch system and is guided by predicted line of sight (PLOS). It can carry out an overfly top attack (OTA) on an armoured vehicle, or a direct attack (DA) on structures and non-armoured vehicles.
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 target. This is an important property for a guided weapon to have, since a person or vehicle that lingers near the target to guide the missile is vulnerable to attack and unable to carry out other tasks.
The FGM-172 SRAW, also known as the Predator SRAW, was a lightweight, close range missile system produced by Lockheed Martin, developed by Lockheed Martin and Israel Military Industries. It is designed to complement the FGM-148 Javelin anti-tank missile. The Predator had a longer range and was more powerful than the AT4 that it was designed to replace, but had a shorter range than the Javelin.
Alcotán-100 is a recoilless, one-man portable, single-use anti-tank rocket launcher system used by infantry, manufactured by Instalaza. The firing control unit predicts the future aiming point based on calculation before the rocket fire. It is being used as an infantry-type weapon and fireable from confined spaces. Instalaza claiming it to be, "the highest performance in unguided shoulder launched systems". It is in service with the Spanish Armed Forces and exported to other countries.
Man-portable anti-tank systems are traditionally portable shoulder-launched projectile systems firing heavy shell-type projectiles, typically designed to combat protected targets, such as armoured vehicles, field fortifications and at times even low-flying aircraft.
The Shershen is a Belarusian third generation anti-tank guided missile (ATGM), based on Belarusian-Ukrainian ATGM Skif but reportedly with additional capabilities. Designed to defeat modern armored vehicles, protected objects and low-speed low-altitude targets.
The Hongjian-12 is a third generation, man-portable, fire-and-forget infrared homing anti-tank missile of China. It was unveiled at the Eurosatory 2014 exhibition.
The Akeron MP, formerly known as MMP is a French fifth generation man-portable anti-tank guided missile system. Featuring both fire-and-forget and command guidance operating modes, it also integrates third party target designation for indirect firing scenarios through its lock-on after launch capability for non-line-of-sight (NLOS) use.
The Skif, also known as the Stugna-P or Stuhna-P, is a Ukrainian anti-tank guided missile (ATGM) system developed in the early 2010s by the Luch Design Bureau, a unit of UkrOboronProm. The initial guidance device PN-S (ПН-С) of the Skif was developed and manufactured by Belarusian design bureau Peleng based in Minsk.
The Guided Multipurpose Munition (GMM) is an infantry precision guided munition being developed by Saab Group and Raytheon.