Global Positioning System - Article Index

Encyclopedia - Global Positioning System: Encyclopedia Ii - Global Positioning System - Technical Description
The system consists of a constellation of at least 24 satellites in 6 orbital planes. The GPS satellites were initially manufactured by R...   » Read the article

Encyclopedia - Global Positioning System: Encyclopedia Ii - Global Positioning System - Technical Description
A GPS receiver compares time signal transmissions from four or more satellites to calculate the precise time and its current position (la...   » Read the article

Dictionary - Gps, Global Positioning System: Oceanography Dictionary - Gps, Global Positioning System
  Definition and meaning of GPS:   GPS (Global Positioning System) - a network of satellites and receiving devices used t...   » Read the article

Article - Oceanography Sitemap I - G
This is a sitemap for Oceanography - G . Click on a link and you will find multiple definitions and articles related to the word. The ...   » Read the article

Encyclopedia - Aviation: Encyclopedia - Aviation
Aviation or Air transport refers to the activities surrounding mechanical flight and the aircraft industry. Aircraft, include fixed wing ...   » Read the article

Encyclopedia - Differential Gps: Encyclopedia Ii - Differential Gps - Variations
DGPS can refer to any type of Ground Based Augmentation System (GBAS). There are many operational systems in use throughout the world, ac...   » Read the article

Encyclopedia - 1989: Encyclopedia - 1989
1989 (MCMLXXXIX) is a common year starting on Sunday of the Gregorian calendar. The world population growth in absolute numbers is believ...   » Read the article

Encyclopedia - Surveying: Encyclopedia Ii - Surveying - Method
Historically, distances were measured using a variety of means, such as chains with links of a known length, for instance a Gunter's Chai...   » Read the article

Encyclopedia - Tacan: Encyclopedia Ii - Tacan - Operation
TACAN in general can be described as the military version of the VOR/DME system. It operates in the frequency band 960-1215 MHz. The bear...   » Read the article

Encyclopedia - Navigation: Encyclopedia Ii - Navigation - Western Navigation
Navigation - Modern methods. There are several different branches of navigation, including but not limited to: celestial navigation - ...   » Read the article

Encyclopedia - Local Area Augmentation System: Encyclopedia Ii - Local Area Augmentation System - History
LAAS is designed to correct some of the aviation-related problems of GPS. One problem is the lack of a real-time, rapid-response monitori...   » Read the article

Encyclopedia - A-10 Thunderbolt Ii: Encyclopedia - A-10 Thunderbolt Ii
The A-10/OA-10 Thunderbolt II, nicknamed and universally known as the "Warthog", is the first US Air Force aircraft designed for close ai...   » Read the article

Encyclopedia - Pro Tech: Encyclopedia - Pro Tech
Pro Tech Monitoring has been a leader in the Global Positioning System (GPS) offender tracking market since 1997. As of 2005, Pro Tech Mo...   » Read the article

Encyclopedia - Avionics: Encyclopedia - Avionics
The onboard electronics used for piloting an aircraft are called avionics (AVI-ation electr-ONICS). Avionics include communications and n...   » Read the article

Encyclopedia - Accelerometer: Encyclopedia - Accelerometer
An accelerometer is a device for measuring acceleration. An accelerometer inherently measures its own motion, in contrast to a device bas...   » Read the article

Encyclopedia - Hiking: Encyclopedia - Hiking
Hiking is a form of walking, undertaken with the specific purpose of exploring and enjoying the scenery. It usually takes place on trails...   » Read the article

Encyclopedia - United States Army: Encyclopedia - United States Army
The Army is the branch of the United States armed forces that has primary responsibility for land-based military operations. As of fiscal...   » Read the article

Encyclopedia - Vhf Omnidirectional Range: Encyclopedia - Vhf Omnidirectional Range
This article is about the radio navigation aid, see vestibulo-ocular reflex for the important eye movement that has provided insight into...   » Read the article

Encyclopedia - Weather Balloon: Encyclopedia - Weather Balloon
A weather balloon is a balloon which carries instruments aloft to send back information on atmospheric pressure, temperature, and humidit...   » Read the article

Encyclopedia - Gulf War: Encyclopedia - Gulf War
The 1991 Gulf War also known as Persian Gulf War was a conflict between Iraq and a coalition force of approximately 30 nations[1] mandat...   » Read the article

Encyclopedia - Ch-47 Chinook: Encyclopedia - Ch-47 Chinook
The CH-47 Chinook is a versatile, twin-engine, twin-rotor heavy-lift helicopter. The contra-rotating rotors eliminate the need for a rear...   » Read the article

Encyclopedia - B-1 Lancer: Encyclopedia - B-1 Lancer
The Boeing IDS (formerly Rockwell) B-1B Lancer is a long-range strategic bomber in service with the USAF. Together with the B-52 Stratofo...   » Read the article

Encyclopedia - Information Theory: Encyclopedia - Information Theory
Information theory is the mathematical theory of data communication and storage, generally considered to have been founded in 1948 by Cla...   » Read the article

Encyclopedia - Navigation: Encyclopedia Ii - Navigation - Polynesian Navigation
The Polynesian navigators routinely crossed thousands of miles of open ocean, to tiny inhabited islands, using only their own senses and ...   » Read the article

Encyclopedia - Tacan: Encyclopedia Ii - Tacan - Drawbacks
For military usage a primary drawback is lack of the ability to control emissions (EMCON) and stealth. Naval TACAN operations are designe...   » Read the article

Encyclopedia - Local Area Augmentation System: Encyclopedia Ii - Local Area Augmentation System - Drawbacks
As of 2005, LAAS has a Category I precision approach capability. This is similar to the WAAS program, but since it covers most of North A...   » Read the article

Encyclopedia - Local Area Augmentation System: Encyclopedia Ii - Local Area Augmentation System - Benefits
One of the primary benefits of LAAS is that a single installation at a major airport can be used for multiple precision approaches within...   » Read the article

Encyclopedia - Local Area Augmentation System: Encyclopedia Ii - Local Area Augmentation System - Operation
Local reference receivers are located around an airport at precisely surveyed locations. The signal received from the GPS constellation i...   » Read the article

Encyclopedia - Surveying: Encyclopedia Ii - Surveying - Origins
Surveying techniques have existed throughout much of recorded history. In Ancient Egypt, when the Nile River overflowed its banks and was...   » Read the article

Encyclopedia - Tacan: Encyclopedia Ii - Tacan - Accuracy
Theoretically a TACAN should provide a nine-fold increase in accuracy compared to a VOR but operational use has shown only a 1.5 to 2 fol...   » Read the article

Encyclopedia - Surveying: Encyclopedia Ii - Surveying - Surveying As A Career
The basic principles of surveying have changed little over the ages, but the tools used by surveyors have evolved tremendously. Engineeri...   » Read the article

Encyclopedia - Defense Advanced Research Projects Agency: Encyclopedia - Defense Advanced Research Projects Agency
The Defense Advanced Research Projects Agency (DARPA) is an agency of the United States Department of Defense responsible for the develop...   » Read the article

Encyclopedia - 2d Space Operations Squadron: Encyclopedia Ii - 2d Space Operations Squadron - History
2 SOPS was originally constituted as the 2d Surveillance Squadron (Sensor) and activated on 16 January 1962 under North American Air Defe...   » Read the article

Encyclopedia - Air Force Space Command: Encyclopedia Ii - Air Force Space Command - Organization
Air Force Space Command - Numbered Air Forces. Air Force Space Command has two numbered air forces. The Fourteenth Air Force provides s...   » Read the article

Encyclopedia - 1989: Encyclopedia Ii - 1989 - Events
1989 - January. January 7 - Last day of the Showa period due to the death of Emperor Hirohito(aka Emperor Showa after his death) in Ja...   » Read the article

Encyclopedia - Radio Navigation: Encyclopedia Ii - Radio Navigation - Lorenz
In the 1930s German radio engineers developed a new system, called the "Ultrakurzwellen-Landefunkfeuer" (LFF), or simply "Leitstrahl" (gu...   » Read the article

Encyclopedia - A-10 Thunderbolt Ii: Encyclopedia Ii - A-10 Thunderbolt Ii - Description
A-10 Thunderbolt II - Features. The A-10/OA-10 has excellent maneuverability at low speeds and altitude, thanks to wide, straight wings...   » Read the article

Encyclopedia - A-10 Thunderbolt Ii: Encyclopedia Ii - A-10 Thunderbolt Ii - Description
The A-10/OA-10 has excellent maneuverability at low speeds and altitude, thanks to wide, straight wings. These also allow short takeoffs ...   » Read the article

Encyclopedia - Sea Level: Encyclopedia Ii - Sea Level - Difficulties In Utilization
To extend this definition far from land means comparing the local height of the mean sea surface with a "level" reference surface, or dat...   » Read the article

Encyclopedia - Agm-130: Encyclopedia Ii - Agm-130 - Overview
The AGM-130 is a powered air-to-surface missile designed for strikes at long range against various targets. It is essentially a powered v...   » Read the article

Encyclopedia - Agm-86: Encyclopedia Ii - Agm-86 - Background
AGM-86 - AGM-86A/B. In February 1974, the U.S. Air Force entered into contract to develop and flight-test the prototype or proof-of-con...   » Read the article

Encyclopedia - Area Control Center: Encyclopedia Ii - Area Control Center - Center Operations
Air traffic controllers working within a Center communicate via radio with pilots of instrument flight rules aircraft passing through the...   » Read the article

Encyclopedia - United States Army: Encyclopedia Ii - United States Army - Named Campaigns
United States Army - Revolutionary War. Lexington, 19 April 1775. Opening hostilities of the Revolutionary War occurred at Lexington, ...   » Read the article

Encyclopedia - Lockheed U-2: Encyclopedia Ii - Lockheed U-2 - Details
The U-2, whose development name at Lockheed was the CL-282 Aquatone, needed an official name. It could not be named with letters such as ...   » Read the article

Encyclopedia - Non-directional Beacon: Encyclopedia Ii - Non-directional Beacon - Usage Of Ndbs
NDBs provide rudimentary navigation – essentially, the ability to fly a line through the sky. However, with the advent of VOR navigatio...   » Read the article

Encyclopedia - Satellite Navigation System: Encyclopedia Ii - Satellite Navigation System - History And Theory
An early predecessor were the ground based LORAN and Omega systems, which used terrestrial longwave radio transmitters instead of satelli...   » Read the article

Encyclopedia - Outer Space: Encyclopedia Ii - Outer Space - Space Does Not Equal Orbit
To perform an orbital spaceflight, a spacecraft must go higher and faster than for a sub-orbital spaceflight. A spacecraft has not made o...   » Read the article

Encyclopedia - Vhf Omnidirectional Range: Encyclopedia Ii - Vhf Omnidirectional Range - Using The Vor
A typical mechanical VOR display consists of a compass dial (usually called a compass card) surrounding a vertical needle and a To/From i...   » Read the article

Encyclopedia - Bgm-109 Tomahawk: Encyclopedia Ii - Bgm-109 Tomahawk - Tactical Tomahawk
By far the biggest improvement is making the Tomahawk Network-centric warfare-capable, using data from multiple sensors (aircraft, UAVs, ...   » Read the article

Encyclopedia - Transit Satellite: Encyclopedia Ii - Transit Satellite - History
The system was developed by the Johns Hopkins University Applied Physics Laboratory JHUAPL for the US Navy. The first successful tests of...   » Read the article

Encyclopedia - Automatic Dependent Surveillance-broadcast: Encyclopedia Ii - Automatic Dependent Surveillance-broadcast - Implementation Timetable
The timetable for airborne ADS-B equipage will be determined by ground and airborne facility implementation, equipment cost, perceived be...   » Read the article

Encyclopedia - Time Dilation: Encyclopedia Ii - Time Dilation - Experimental Confirmations
Time dilation has been tested a number of times. The routine work carried on in particle accelerators since the 1950s, such as those at C...   » Read the article

Encyclopedia - Rq-4 Global Hawk: Encyclopedia Ii - Rq-4 Global Hawk - Integrated System
The Global Hawk UAV system comprises an air vehicle segment consisting of air vehicles with sensor payloads, avionics, and data links; a ...   » Read the article

Encyclopedia - Oil Platform: Encyclopedia Ii - Oil Platform - Platform Types
Larger lake and sea-based oil platforms and oil rigs are some of the largest moveable man-made structures in the world. There are at leas...   » Read the article

Encyclopedia - Raf Tornado Gr4: Encyclopedia Ii - Raf Tornado Gr4 - History
British Tornados were built by British Aerospace as part of the tri-national company Panavia. The aircraft entered service as the Tornado...   » Read the article

Encyclopedia - Raf Tornado Gr4a: Encyclopedia Ii - Raf Tornado Gr4a - History
The Tornado programme first began with Tornado GR1s, which were built by a tri-national company (Panavia). 30 GR1As were ordered and were...   » Read the article

Encyclopedia - Lockheed U-2: Encyclopedia Ii - Lockheed U-2 - Details
The U-2, whose development name at Lockheed was the CL-282 Aquatone, needed an official name. It could not be named with letters such as ...   » Read the article

Encyclopedia - Lidar: Encyclopedia Ii - Lidar - General Description
The primary difference between lidar and radar is that with lidar, much shorter wavelengths of the electromagnetic spectrum are used, typ...   » Read the article

Encyclopedia - Jason 1: Encyclopedia Ii - Jason 1 - Use Of Information
A number of satellites (See links) use exotic dual-band radar altimeters to measure height from a spacecraft. That measurement, coupled w...   » Read the article

Encyclopedia - Linear Feedback Shift Register: Encyclopedia Ii - Linear Feedback Shift Register - How It Works
The list of the bits positions that affect the next state is called the tap sequence. In the diagram below, the sequence is [16,14,13,11]...   » Read the article

Encyclopedia - Radio Navigation: Encyclopedia Ii - Radio Navigation - Lorenz
In the 1930s German radio engineers developed a new system, called the "Ultrakurzwellen-Landefunkfeuer" (LFF), or simply "Leitstrahl" (gu...   » Read the article

Encyclopedia - Roadshow: Encyclopedia Ii - Roadshow - Business
RoadShow business includes of three main areas: MMOB, Transit Network and Merchandising business. The company aims at providing their cli...   » Read the article

Encyclopedia - United States Army: Encyclopedia Ii - United States Army - Named Campaigns
United States Army - Revolutionary War. Lexington, 19 April 1775. Opening hostilities of the Revolutionary War occurred at Lexington, ...   » Read the article

Encyclopedia - World Geodetic System: Encyclopedia Ii - World Geodetic System - The Department Of Defense World Geodetic System 1972
After an extensive effort extending over a period of approximately three years, the Department of Defense World Geodetic System 1972 was ...   » Read the article

Encyclopedia - Windows Mobile: Encyclopedia Ii - Windows Mobile - Windows Mobile 5.0
Windows Mobile 5.0, originally codenamed "Magneto", was released on May 9, 2005. It is powered by Windows CE 5.0 and uses the .NET Compac...   » Read the article

Encyclopedia - Time Signal: Encyclopedia Ii - Time Signal - Audible And Visible Time Signals
One sort of public time signal is, of course, a striking clock. These clocks, however, are only as good as the clockwork that activates t...   » Read the article

Encyclopedia - Telematics: Encyclopedia Ii - Telematics - Practical Applications Of Vehicle Telematics
When used in a commercial environment vehicle telematics can potentially be a powerful and valuable tool to improve the efficiency of an ...   » Read the article

Encyclopedia - Sagnac Effect: Encyclopedia Ii - Sagnac Effect - Ring Lasers And Ring Interferometers
The type of ring interferometer that was described in the opening section is sometimes called a 'passive ring interferometer'. A passive ...   » Read the article

Encyclopedia - Road-rule Enforcement Camera: Encyclopedia Ii - Road-rule Enforcement Camera - Issues
In a number of jurisdictions, there was a degree of controversy surrounding the deployment of increasing numbers of speed and red-light c...   » Read the article

Encyclopedia - Ivan A. Getting: Encyclopedia Ii - Ivan A. Getting - Biography And Positions Held
Ivan A. Getting was born on 18 January 1912 in New York City and grew up in Pittsburg, PA. He attended the Massachusetts Institute of Tec...   » Read the article

Encyclopedia - Instrument Landing System: Encyclopedia Ii - Instrument Landing System - Components
A complete ILS system includes additional sub-systems in addition to the localizer and glideslope systems described above. Instrument La...   » Read the article

Encyclopedia - Cornell Chimes: Encyclopedia Ii - Cornell Chimes - The Cornell Chimes
The bells are played by a group of "chimesmasters." Approximately ten chimesmasters play three concerts daily during the school year and ...   » Read the article

Encyclopedia - 1989: Encyclopedia Ii - 1989 - Events
1989 - January. January 7 - Last day of the Showa period due to the death of Emperor Hirohito (aka Emperor Showa after his death) in J...   » Read the article

Encyclopedia - Distance Measuring Equipment: Encyclopedia Ii - Distance Measuring Equipment - Operation
Aircraft use DME to determine their distance from a land-based transponder by sending and receiving pulse pairs - two pulses of fixed dur...   » Read the article

Encyclopedia - Bookcrossing: Encyclopedia Ii - Bookcrossing - Furthering The Bookcrossing Idea
Contact between BookCrossing members (called BookCrossers) is facilitated through forums on the website, email lists (many countries have...   » Read the article

Encyclopedia - B-52 Stratofortress: Encyclopedia Ii - B-52 Stratofortress - Background
For more than 50 years, the B-52 Stratofortress has been the backbone of the manned strategic bomber force for the United States. The B-5...   » Read the article

Encyclopedia - B-1 Lancer: Encyclopedia Ii - B-1 Lancer - Operational History
Sometimes criticized as redundant, the B-1B was given new life as the new threats of the 21st century emerged, and now fills an important...   » Read the article

Encyclopedia - B-52 Stratofortress: Encyclopedia Ii - B-52 Stratofortress - Background
For more than 50 years, the B-52 Stratofortress has been the backbone of the manned strategic bomber force for the United States. The B-5...   » Read the article

Encyclopedia - Enhanced 911: Encyclopedia Ii - Enhanced 911 - Wireline Enhanced 911
There is special privacy legislation that permits emergency operators to obtain the caller's information. This information is gathered by...   » Read the article

Encyclopedia - Garmin: Encyclopedia Ii - Garmin - Founders And Company Origins
Gary Burrell, born in 1937 earned a degree in Electrical Engineering from Wichita State University and graduate degree from the Rensselae...   » Read the article

Encyclopedia - Here: Encyclopedia Ii - Here - In Grammar
In English, here can function as a pronoun, an adverb, and in some dialects as an adjective. It is a deictic expression involving deixis ...   » Read the article

Encyclopedia - Ipaq: Encyclopedia Ii - Ipaq - Model Variations
IPAQ - Compaq iPAQ H3600 series. Compaq's flagship iPAQs were those of the 3600 models. Originally running the Microsoft Windows for Po...   » Read the article

Encyclopedia - Gravitational Time Dilation: Encyclopedia Ii - Gravitational Time Dilation - Definition
Background knowledge the reader may need to learn: What is a gravitational field? What is time dilation? What is spacetime? The reader ma...   » Read the article

Encyclopedia - Locative Media: Encyclopedia Ii - Locative Media - Locative Ubiquitous And Pervasive Computing
The term 'locative media' was coined by Karlis Kalnins. Locative media is closely related to augmented reality (reality overlaid with vir...   » Read the article

Encyclopedia - Road-rule Enforcement Camera: Encyclopedia Ii - Road-rule Enforcement Camera - Issues
Road-rule enforcement camera - Political Issues. The use of road rule enforcement cameras is certainly contentious. There are a number ...   » Read the article

Encyclopedia - Gizmondo: Encyclopedia Ii - Gizmondo - Releases
Gizmondo was released in the United Kingdom on 19 March 2005, initially priced at £229. However, the price of the unit has since fallen ...   » Read the article

Encyclopedia - Automatic Position Reporting System: Encyclopedia Ii - Automatic Position Reporting System - Related Systems
The APRS protocol has been adapted and extended to support projects not directly related to its original purpose. The most notable of the...   » Read the article

Encyclopedia - Gulf War: Encyclopedia Ii - Gulf War - Pre-war Iraqi-american Relations
Prior to the Iran-Iraq War, U.S.-Iraqi relations were cool, and Iraq had been chiefly an ally of the Soviet Union. The U.S. was concerned...   » Read the article

Encyclopedia - Hiking: Encyclopedia Ii - Hiking - Personal Safety Issues
Even if hikers do not heedlessly place themselves in harm's way, they face a variety of risks. However, with the correct precautions, hik...   » Read the article

Encyclopedia - Instrument Landing System: Encyclopedia Ii - Instrument Landing System - Principle Of Operation
An ILS consists of two independent sub-systems, one providing lateral guidance, the other vertical guidance to aircraft approaching a run...   » Read the article

Encyclopedia - Defense Advanced Research Projects Agency: Encyclopedia Ii - Defense Advanced Research Projects Agency - History
DARPA was created as the Advanced Research Projects Agency (ARPA), by Public Law 85-325 and Department of Defense Directive 5105.41, in F...   » Read the article

Encyclopedia - Geographic Coordinate System: Encyclopedia Ii - Geographic Coordinate System - Third Dimension: Altitude Height Depth
To completely specify a location on, in, or above Earth, one has to also specify the elevation. The elevation specifies the verical posit...   » Read the article

Encyclopedia - Infidel Computer Game: Encyclopedia Ii - Infidel Computer Game - Plot
Among the feelies in the package are several documents that set up the backstory quite nicely. The player's character is a self-styled ad...   » Read the article

Encyclopedia - B-1 Lancer: Encyclopedia Ii - B-1 Lancer - Operational History
Sometimes criticized as redundant, the B-1B was given new life as the new threats of the 21st century surfaced, and fills a niche in the ...   » Read the article

Encyclopedia - Information Theory: Encyclopedia Ii - Information Theory - Basic Concepts For Discrete Channels
Information theory - Self-information. Shannon defined a measure of information content called the self-information or surprisal of a m...   » Read the article

Encyclopedia - Galileo Positioning System: Encyclopedia Ii - Galileo Positioning System - History
The first stage of the Galileo program was agreed upon officially on May 26, 2003 by the European Union and the European Space Agency (ES...   » Read the article

Encyclopedia - Ch-47 Chinook: Encyclopedia Ii - Ch-47 Chinook - Variants
CH-47 Chinook - CH-47A. The Boeing Vertol (model 114) YCH-1B/YCH-47A made its initial hovering flight on September 21, 1961. The all-we...   » Read the article

Encyclopedia - Avionics: Encyclopedia Ii - Avionics - History
Radiotelephone (two way voice radio) systems have been installed in aircraft since before World War II, and have been widely used for mis...   » Read the article

Encyclopedia - Instrument Flight Rules: Encyclopedia Ii - Instrument Flight Rules - Weather
One advantage of IFR is the ability to fly an aircraft in instrument meteorological conditions (IMC), weather conditions that do not meet...   » Read the article

Encyclopedia - Engineering Geology: Encyclopedia Ii - Engineering Geology - Geologic Hazards
Typical geologic hazards evaluated by an engineering geologist include fault rupture on seismically active faults ; seismic and ear...   » Read the article

Encyclopedia - A-10 Thunderbolt Ii: Encyclopedia Ii - A-10 Thunderbolt Ii - Description
The A-10/OA-10 has excellent maneuverability at low speeds and altitude, thanks to wide, straight wings. These also allow short takeoffs ...   » Read the article