Attitude and Heading Reference Systems
- Attitude and Heading Reference Systems
Attitude and Heading Reference Systems or better known as Attitude Heading Reference System (AHRS) are 3-axis sensors that provide heading, attitude and yaw information for aircraft. AHRS are designed to replace traditional mechanical gyroscopic flight instruments and provide superior reliability and accuracy.
AHRS consist of either solid-state or MEMS gyroscopes, accelerometers and magnetometers on all three axes. Some AHRS use GPS receivers to improve long-term stability of the gyroscopes. A Kalman filter is typically used to compute the solution from these multiple sources. AHRS differ from traditional inertial navigation systems by using magnetometer and/or GPS data to correct the raw gyroscopic data.
AHRS have proven themselves to be highly reliable and are in common use in commercial and business aircraft. Recent advances in MEMS manufacturing have brought the price of FAA certified AHRS down to below $15,000. AHRS are typically integrated into Electronic Flight Information Systems (EFIS), which are the central part of so-called glass cockpits. AHRS are often combined with air data computers to form an "air data, attitude and heading reference systems" (ADAHRS), which provide additional information such as airspeed, altitude and outside air temperature.
AHRS manufacturers
*Crossbow Technology Inertial Systems (Inertial +GPS), Attitude Heading Reference Systems (AHRS), Inertial Measurement Units (IMU), Vertical Gyros (VG), Accelerometers, Tilt Sensors, Magnetometers.
*Kearfott Guidance & Navigation Corporation, USA
* [http://www.systron.com/ Systron Donner Inertial]
* [http://www.microstrain.com/inclinometers.aspx MicroStrain] Inertial Sensors, Inclinometers and Orientation Sensors
* [http://www.Archangel.com/ Archangel Systems Inc. USA]
* [http://www.navionex.com/About.asp Navionex Inc. Canada]
* [http://www.litef.com Litef GmbH]
*Sagem Avionics, Inc.
* [http://www.watson-gyro.com/ Watson Industries]
* [http://www.xsens.com/ Xsens Technologies]
* [http://www.sonardyne.co.uk/Products/Inertial/ Sonardyne Marine Inertial Products]
* [http://www.northropgrumman.it Northrop Grumman Italia S.p.A. (formerly Lital S.p.A.), ITA ]
* [http://www.innalabs.com/ Innalabs Holding, Inc]
* [http://www.mglavionics.co.za/ MGL Avionics]
* [http://www.imar-navigation.de/ iMAR GmbH]
* [http://www.sbg-systems.com/ SBG Systems] MEMS based Inertial Systems, Attitude and Heading Reference Systems (AHRS), GPS Aided AHRS, 2 axis Inclinometers, Static Oriantation Sensors (3D Compass).
Wikimedia Foundation.
2010.
Look at other dictionaries:
Attitude indicator — An attitude indicator (ADI), gyro horizon or artificial horizon, is an instrument used in an aircraft to inform the pilot of the orientation of the aircraft relative to earth. It indicates pitch (fore and aft tilt) and bank (side to side tilt),… … Wikipedia
L-3 SmartDeck — SmartDeck = SmartDeck [http://www.smartdeck.com SmartDeck Integrated Flight Controls and Display System] is a fully integrated cockpit system developed by [http://www.as.l 3com.com L 3 Avionics Systems] . SmartDeck is one of the many systems… … Wikipedia
Electronic Flight Instrument System — An electronic flight instrument system, or EFIS, is a flight deck instrument display system in which the display technology used is electronic rather than electromechanical. EFIS normally consist of a primary flight display (PFD), multi function… … Wikipedia
Media and Publishing — ▪ 2007 Introduction The Frankfurt Book Fair enjoyed a record number of exhibitors, and the distribution of free newspapers surged. TV broadcasters experimented with ways of engaging their audience via the Internet; mobile TV grew; magazine… … Universalium
rocket and missile system — ▪ weapons system Introduction any of a variety of weapons systems that deliver explosive warheads to their targets by means of rocket propulsion. Rocket is a general term used broadly to describe a variety of jet propelled missiles… … Universalium
Dead reckoning — For other uses, see Dead reckoning (disambiguation). The navigator plots his 9am position, indicated by the triangle, and, using his course and speed, estimates his position at 9:30am and 10am. In navigation, dead reckoning (also ded (for… … Wikipedia
Sistemas de Referencia de Actitud y Rumbo — Los Attitude and Heading Reference Systems (AHRS) o Sistemas de Referencia de Actitud y Rumbo, son sensores tridimensionales que proporcionar información acerca del rumbo, la actitud, y la guiñada de una aeronave. Este tipo de sistemas están… … Wikipedia Español
Kalman filter — Roles of the variables in the Kalman filter. (Larger image here) In statistics, the Kalman filter is a mathematical method named after Rudolf E. Kálmán. Its purpose is to use measurements observed over time, containing noise (random variations)… … Wikipedia
Glass cockpit — A glass cockpit is an aircraft cockpit that features electronic instrument displays. Where a traditional cockpit relies on numerous mechanical gauges to display information, a glass cockpit utilizes several computer displays that can be adjusted… … Wikipedia
Mike A. Horton — Born October 23, 1973 (1973 10 23) (age 38) Austin, Texas (USA) Occupation CEO, Crossbow Technology Spouse Melissa L. Nguyen Children … Wikipedia
