Laser guidance

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Mobile robot guidance by laser beam (sketch) Guidance of multiple mobile robots by laser pointer.png
Mobile robot guidance by laser beam (sketch)

Laser guidance directs a robotics system to a target position by means of a laser beam. The laser guidance of a robot is accomplished by projecting a laser light, image processing and communication to improve the accuracy of guidance. The key idea is to show goal positions to the robot by laser light projection instead of communicating them numerically. This intuitive interface simplifies directing the robot while the visual feedback improves the positioning accuracy and allows for implicit localization. The guidance system may serve also as a mediator for cooperative multiple robots. [1] [2] Examples of proof-of-concept experiments of directing a robot by a laser pointer are shown on video. [3] [4] Laser guidance spans areas of robotics, computer vision, user interface, video games, communication and smart home technologies.

Contents

Commercial systems

Samsung Electronics Co., Ltd. may have been using this technology in robotic vacuum cleaners since 2014. [5]

Google Inc. applied for a patent with USPTO on using visual light or laser beam between devices to represent connections and interactions between them (Appl. No. 13/659,493, Pub. No. 2014/0363168). [6] However, no patent was granted to Google on this application.

Military use

Laser guidance is used by military to guide a missile or other projectile or vehicle to a target by means of a laser beam, either beam riding guidance or semi-active laser homing (SALH). [7] With this technique, a laser is kept pointed at the target and the laser radiation bounces off the target and is scattered in all directions (this is known as "painting the target", or "laser painting"). The missile, bomb, etc. is launched or dropped somewhere near the target. When it is close enough for some of the reflected laser energy from the target to reach it, a laser seeker detects which direction this energy is coming from and adjusts the projectile trajectory towards the source. While the projectile is in the general area and the laser is kept aimed at the target, the projectile should be guided accurately to the target. Countermeasures to laser guidance are laser detection systems, smoke screen, and anti-laser active protection systems.

See also

Related Research Articles

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<span class="mw-page-title-main">Starstreak</span> British man-portable/vehicle mounted surface-to-air missile

Starstreak is a British short-range surface-to-air missile that can be used as a man-portable air-defence system (MANPADS) or used in heavier systems. It is manufactured by Thales Air Defence in Belfast, Northern Ireland. It is also known as Starstreak HVM. After launch, the missile accelerates to more than Mach 4, making it the fastest short-range surface-to-air missile in existence. It then launches three laser beam-riding submunitions, increasing the likelihood of a successful hit on the target. Starstreak has been in service with the British Army since 1997. In 2012 Thales relaunched the system as ForceSHIELD.

<span class="mw-page-title-main">Air-to-air missile</span> Missile fired from the air at airborne targets

An air-to-air missile (AAM) is a missile fired from an aircraft for the purpose of destroying another aircraft. AAMs are typically powered by one or more rocket motors, usually solid fueled but sometimes liquid fueled. Ramjet engines, as used on the Meteor, are emerging as propulsion that will enable future medium- to long-range missiles to maintain higher average speed across their engagement envelope.

<span class="mw-page-title-main">Near-field communication</span> Radio communication established between devices by bringing them into proximity

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<span class="mw-page-title-main">Missile guidance</span> Variety of methods of guiding a missile

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).

<span class="mw-page-title-main">Roomba</span> Series of autonomous robotic vacuum cleaners sold by iRobot

Roomba is a series of autonomous robotic vacuum cleaners made by the company iRobot. Introduced in September 2002, they have a set of sensors that are used to help them to navigate the floor area of a home. These sensors can detect the presence of obstacles and steep drops. Amazon announced the intent to purchase the parent company of the Roomba in August 2022, though the acquisition has been delayed by regulators in Europe.

<span class="mw-page-title-main">Laser safety</span> Protocols for safe use, design and implementation of laser technology

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<span class="mw-page-title-main">Handheld projector</span> Image projector in a handheld device

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<span class="mw-page-title-main">Laser pointer</span> Handheld device that emits a laser beam

A laser pointer or laser pen is a small handheld device with a power source and a laser diode emitting a very narrow coherent low-powered laser beam of visible light, intended to be used to highlight something of interest by illuminating it with a small bright spot of colored light.

<span class="mw-page-title-main">9M117 Bastion</span> Russian anti-tank missile

The 9M117 Bastion is a Soviet laser beam-riding anti-tank missile. It is used in a number of separate weapon systems, including the 9K116-1 Bastion missile system, 9K118 Sheksna, T-12 anti-tank gun and the 3UBK12 fired from the BMP-3. The 100 mm projectile entered service in 1981.

<span class="mw-page-title-main">Laser weapon</span> Directed-energy weapon using lasers

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<span class="mw-page-title-main">Krasnopol (weapon system)</span> Soviet/Russian guided 152/155 mm artillery shell

The 2K25 Krasnopol is a Soviet 152/155 mm cannon-launched, fin-stabilized, base bleed-assisted, semi-automatic laser-guided artillery weapon system. It automatically 'homes' on a point illuminated by a laser designator, typically operated by a drone or ground-based artillery observer. Krasnopol projectiles are fired mainly from Soviet self-propelled howitzers such as the 2S3 Akatsiya and 2S19 Msta-S and are intended to engage small ground targets such as tanks, other direct fire weapons, strong-points, or other significant point targets visible to the observer. It can be used against both stationary and moving targets.

<span class="mw-page-title-main">Guidance, navigation, and control</span> Branch of engineering

Guidance, navigation and control is a branch of engineering dealing with the design of systems to control the movement of vehicles, especially, automobiles, ships, aircraft, and spacecraft. In many cases these functions can be performed by trained humans. However, because of the speed of, for example, a rocket's dynamics, human reaction time is too slow to control this movement. Therefore, systems—now almost exclusively digital electronic—are used for such control. Even in cases where humans can perform these functions, it is often the case that GNC systems provide benefits such as alleviating operator work load, smoothing turbulence, fuel savings, etc. In addition, sophisticated applications of GNC enable automatic or remote control.

<span class="mw-page-title-main">Precision-guided munition</span> "Smart bombs", used to strike targets precisely

A precision-guided munition is a guided munition intended to precisely hit a specific target, to minimize collateral damage and increase lethality against intended targets. During the First Gulf War guided munitions accounted for only 9% of weapons fired, but accounted for 75% of all successful hits. Despite guided weapons generally being used on more difficult targets, they were still 35 times more likely to destroy their targets per weapon dropped.

<span class="mw-page-title-main">Inertial navigation system</span> Continuously computed dead reckoning

An inertial navigation system is a navigation device that uses motion sensors (accelerometers), rotation sensors (gyroscopes) and a computer to continuously calculate by dead reckoning the position, the orientation, and the velocity of a moving object without the need for external references. Often the inertial sensors are supplemented by a barometric altimeter and sometimes by magnetic sensors (magnetometers) and/or speed measuring devices. INSs are used on mobile robots and on vehicles such as ships, aircraft, submarines, guided missiles, and spacecraft. Older INS systems generally used an inertial platform as their mounting point to the vehicle and the terms are sometimes considered synonymous.

<span class="mw-page-title-main">Iron Beam</span> Laser air defense system

Iron Beam, officially מגן אור, magen or, Light Shield is a directed-energy weapon air defense system unveiled at the Singapore Airshow on February 11, 2014 by Israeli defense contractor Rafael Advanced Defense Systems. The system is designed to destroy short-range rockets, artillery, and mortar bombs; it has a range of up to 7 km (4.3 mi), complementing the Iron Dome system which was designed to intercept missiles launched from a greater distance. In addition, the system could also intercept unmanned aerial vehicles (UAVs). Iron Beam will constitute the fifth element of Israel's integrated missile defense system, in addition to Arrow 2, Arrow 3, David's Sling and Iron Dome.

<span class="mw-page-title-main">LG G3</span> Android smartphone developed by LG Electronics

The LG G3 is an Android smartphone developed by LG Electronics as part of the LG G series. First released in South Korea on May 28, 2014, it is a successor to 2013's LG G2. Inheriting design elements from the G2, such as its thin screen bezels and rear-mounted power and volume buttons, the G3 is distinguished primarily by being the first smartphone from a major manufacturer to incorporate a 1440p display, and its inclusion of an infrared hybrid autofocus system for its camera. Its video resolution has been upgraded to 2160p (4K). LG also touted the device's plastic "metallic skin"—designed to give the device a higher quality appearance, and a "simpler" user interface with an integrated intelligent personal assistant system. The battery can be quickly changed by the user, allowing charged spare batteries to be carried.

References

  1. Paromtchik, Igor (2006). "Optical Guidance Method for Robots Capable of Vision and Communication" (PDF). Robotics and Autonomous Systems. Elsevier. 54 (6): 461–471. doi:10.1016/j.robot.2006.02.005.
  2. "Method and System of Optical Guidance of Mobile Body". U.S. Patent 6,629,028.
  3. "Mobile Robot Guidance by Laser Pointer" (Video). YouTube . Archived from the original on 2021-12-12. Retrieved 3 May 2015.
  4. "Legged Robot Direction by Laser Pointer" (Video). YouTube . Archived from the original on 2021-12-12. Retrieved 3 May 2015.
  5. "Samsung's Robotic Vacuum Cleaner Chases Laser Pointer". 7 August 2014. Retrieved 3 May 2015.
  6. Purcher, Jack (14 December 2014). "Google Invents a Smartphone that Could Transfer Data to a Large Smart Wall or Display using a built-in Laser Beam" . Retrieved 3 May 2015.
  7. "Spot Leading Target Laser Guidance for Engaging Moving Targets". U.S. Patent 8,237,095.