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Topic: GPS


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In the News (Sun 21 Apr 19)

  
 GPS Schools - Wikipedia, the free encyclopedia
GPS schools compete annually in March for the Head of the River.
GPS rowing is famously known as the strongest schoolboy competition in the world, this has been justified with various record times and GPS wins at international meets such as Henley.
The GPS, Great Public Schools, or Athletic Association of the Greater Public Schools of New South Wales (AAGPS) is an association of mostly private boys' schools in New South Wales, Australia that share common interests, ethics, educational philosophy and contest sporting events among themselves.
en.wikipedia.org /wiki/GPS_Schools   (619 words)

  
 Assisted GPS - Wikipedia, the free encyclopedia
GPS uses a network of 24 satellites to triangulate a receiver’s position and provide latitude and longitude coordinates.
Assisted GPS describes a system where outside sources, such as assistance server (Mobile Location Server) via a network, help a GPS receiver perform the tasks required to make range measurements and position solutions.
In A-GPS networks, the receiver, being limited in processing power and normally under less than ideal locations for position fixing, communicates with the assistance server that has high processing power and access to a reference network.
en.wikipedia.org /wiki/Assisted_GPS   (475 words)

  
 Global Positioning System - Wikipedia, the free encyclopedia
GPS has become a vital global utility, indispensable for modern navigation on land, sea, and air around the world, as well as an important tool for map-making, and land surveying.
GPS receivers calculate their current position (latitude, longitude, elevation), and the precise time, using the process of trilateration.
Many synchronization systems use GPS as a source of accurate time, hence one of the most common applications of this use is that of GPS as a reference clock for time code generators or NTP clocks.
en.wikipedia.org /wiki/GPS   (4979 words)

  
 Global Positioning System - Wikipedia, the free encyclopedia
Portable GPS units do not transmit radio signals like mobile phones; however there is some concern that the local oscillator, used to match the GPS frequency to the internal receiver could cause interference to communications equipment on the aircraft.
Many synchronization systems use GPS as a source of accurate time, hence one of the most common applications of this use is that of GPS as a reference clock for time code generators or NTP clocks.
The availability of hand-held GPS receivers for a cost of about $90 and up (March 2005) has led to recreational applications including the popular activity Geocaching, in which a GPS unit is used to search for objects deliberately hidden in nature, by traveling to the GPS coordinates.
en.wikipedia.org /wiki/GPS   (4739 words)

  
 Differential GPS - Wikipedia, the free encyclopedia
Differential Global Positioning System (DGPS) is an enhancement to Global Positioning System that uses a network of fixed ground based reference stations to broadcast the difference between the positions indicated by the satellite systems and the known fixed positions.
DGPS was especially useful when GPS was still degraded using "Selective Availability", because it could improve accuracy to 5–10 metres.
There are 84 currently broadcasting NDGPS sites in the US network, with plans for up to 128 total sites to be online within the next 15 years.
en.wikipedia.org /wiki/Differential_GPS   (366 words)

  
 GPS drawing - Wikipedia, the free encyclopedia
GPS Drawing is a hobby mixing art, travelling (walking, flying and driving) and technology and is a method of drawing that uses GPS to create large scale drawings.
Tracks of a journey can automatically be recorded into the GPS receiver's memory and can subsequentially be downloaded onto an electronic computer as a basis for drawing, sculpture or animation.
The total length is 537 km, and the height of the drawing in typographic units is 319,334,400 points.
en.wikipedia.org /wiki/GPS_drawing   (366 words)

  
 Lowrance Electronics -- Tutorials -- GPS -- Introduction--What Is GPS?
GPS operates 24 hours a day, in all weather conditions, and can be used worldwide for precise navigation on land, on water and even in the air.
GPS is the global standard in navigation because it is completely free of charge to the public.
GPS was conceived in the 1970s, and is controlled by the United States Department of Defense.
www.lowrance.com /Tutorials/GPS/gps_tutorial_01.asp   (1384 words)

  
 What is GPS?
The GPS (Global Positioning System) is a "constellation" of 24 well-spaced satellites that orbit the Earth and make it possible for people with ground receivers to pinpoint their geographic location.
The GPS is owned and operated by the U.S. Department of Defense, and as such, the accuracy of the signal is intentionally degraded for non-US military users.
GPS is available for general use around the world.
www.cr.nps.gov /hps/gis/gps.htm   (315 words)

  
 Global Positioning System - Wikipedia, the free encyclopedia
Portable GPS units do not transmit radio signals like mobile phones; however there is some concern that the local oscillator, used to match the GPS frequency to the internal receiver could cause interference to communications equipment on the aircraft.
Many synchronization systems use GPS as a source of accurate time, hence one of the most common applications of this use is that of GPS as a reference clock for time code generators or NTP clocks.
The GPS satellites were initially manufactured by Rockwell; the first was launched in February 1978, and the most recent was launched September 25, 2005.
en.wikipedia.org /wiki/Global_Positioning_System   (5016 words)

  
 Garmin: What is GPS?
GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use.
A GPS receiver must be locked on to the signal of at least three satellites to calculate a 2D position (latitude and longitude) and track movement.
The time difference tells the GPS receiver how far away the satellite is. Now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map.
www.garmin.com /aboutGPS   (1082 words)

  
 Radio-Electronics.Com :: Assisted GPS A-GPS
The system known as Assisted GPS or A-GPS uses the mobile phone network to assist the GPS receiver in the mobile phone to overcome the problems associated with TTFF and the low signal levels that are encountered under some situations.
In particular Assisted GPS (A-GPS) has been chosen as the front runner of the possible location services to be used for cell phone applications where the E911 directive has mandated the accurate location of mobile phones by the emergency services.
This can be achieved by incorporating a GPS receiver into the base station itself, and as this is sufficiently close in position to the mobile the data received by the base station is sufficiently accurate to be transmitted on to the mobiles.
www.radio-electronics.com /info/cellulartelecomms/location_services/assisted_gps.php   (1002 words)

  
 FETConnections - Summer 2001
This study, in thirty schools, was conducted using multiple measures across several different units of analysis to produce a comprehensive profile of the validity and reliability of the GPS.
Early versions of the Technology GPS needs assessment instruments were reviewed by school and district-level focus groups and field-tested in elementary, middle and high schools around the state.
Schools that score from 1 to 3.9 are considered to be at the Entry stage, from 4 to 6.9 at the Adaptation stage, and from 7 to 10 at the Transformation stage.
www.fetc.org /fetcon/2001-Summer/curry.htm   (1560 words)

  
 Garmin: What is GPS?
A GPS receiver must be locked on to the signal of at least three satellites to calculate a 2D position (latitude and longitude) and track movement.
GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use.
Receiver clock errors — A receiver's built-in clock is not as accurate as the atomic clocks onboard the GPS satellites.
www.garmin.com /aboutGPS   (1560 words)

  
 FAQ - GPS Basics
GPS is used to support land, sea, and airborne navigation, surveying, geophysical exploration, mapping and geodesy, vehicle location systems, farming, transportation systems, and a wide variety of other additional applications.
The basic GPS signal is accurate on a worst-case basis to within approximately 100 meters lateral and 140 meters vertical everywhere on earth.
A. GPS is a satellite-based radio navigation system, initially developed in the early 1960s and operated by the U.S. Department of Defense (DOD) since then.
gps.faa.gov /FAQ/faq-gps.htm   (2712 words)

  
 Differential GPS notes
DGPS, Differential GPS is the use of differential correction data for the satellites in view, to remove the errors in the position measured by a GPS receiver due previously to SA (selective availability), and to other effects.
Differential GPS would enable you to obtain fixes within 10 metres of the actual position.
All you need is a Differential ready GPS receiver and a beacon receiver to take advantage of the 5 metre accuracy that may be achieved.
www.effective-solutions.co.uk /dgps1.html   (571 words)

  
 Unit 017 - Global Positioning System Overview
GPS time in the receiver is computed from the receiver clock offset that allows the corrected pseudo-ranges to converge at the receiver position.
GPS is increasingly used as an input for Geographic Information Systems particularly for precise positioning of geospatial data and the collection of data in the field.
GPS ranging errors are magnified by the range vector differences between the receiver and the SVs.
www.ncgia.ucsb.edu /education/curricula/giscc/units/u017/u017.html   (3021 words)

  
 New approaches in GPS based location systems
This server-aided GPS approach has been pioneered by Snaptrack (The company is now a part of Qualcomm) and improved upon conventional GPS performance by sharing processing and database functions between the mobile GPS receiver/processor (client) and a remote infrastructure (the server and reference network).
Assisted GPS utilizes the complimentary nature of both approaches to overcome situational weaknesses experienced by either network or GPS approaches working alone.
The result is a highly sensitive, cost-effective, low-power, GPS receiving system that provides first fixes in a few seconds from a cold start, even when conventional GPS is unworkable or unreliable.
www.gisdevelopment.net /technology/gps/ma04061b.htm   (457 words)

  
 GPS Terminology
For GPS use, quadrifilar antennas are typically half-wavelength or quarter-wavelength size and encased in a plastic cylinder for durability.
The GPS carrier frequencies (1227.6 MHz and 1575.42 MHz) are in the L band.
A GPS receiver system that would allow the receiver to detect incorrect signals being transmitted by the satellites by comparing solutions with different sets of satellites.
www.tycoelectronics.com /gps/terminology.asp   (3947 words)

  
 GPS Drawing
Tracks of a journey are automatically recorded into the GPS receiver's memory and are subsequentially downloaded onto an electronic computer and are turned into a drawing, sculpture or animation.
A method of drawing that uses GPS to create large scale drawings.
The total length is 537 km, and if the height of the drawing was translated into the point size it would be 319,334,400 points.
www.encyclopedia-1.com /g/gp/gps_drawing.html   (3947 words)

  
 Scale Drawing
Drawing landscape design plans begins with a sketch called the "scale diagram." The goal of this phase in developing landscape design plans is to produce a scale drawing of a property.
The whole idea behind creating scale drawings is to allow the drafter to create a drawing which is proportionately the same as the artifact it represents.
You are required to title your scale drawing and to present it to the class...
www.prorankyahoo.biz /scale-drawing.php   (3947 words)

  
 Drawing
GPS Drawing A method of Iffley in Oxford to Southampton and back, and "F" which traverses through the Ifield Road in Lon...
Drawing and quartering Drawing and quartering was part of the penalty anciently ordained in murder and other capital cri...
Drawing table A drawing table (or drafting table or draughting table) is also often called an architect's table.
www.brainyencyclopedia.com /topics/drawing.html   (3947 words)

  
 GPS tracking and navigation systems in NSW Australia - Swintech GPS Tracking Solutions
GPS technology can be actively used to resolve customer disputes related to arrival time, service duration and service location.
Swintech GPS Tracking Solutions is an independent GPS solutions company, and specialises in a variety of portable and fixed GPS tracking devices and systems.
Our range of GPS solutions can be customised to suit almost any type of application so please do not hesitate contacting us for additional information and to discuss your needs and requirements.
www.swintech.com /gps_tracking.htm   (902 words)

  
 GPS Vehicle Tracking Systems, GPS Tracking
GPS tracking will allow you to monitor your employees and vehicles with assurance and confidence.
The advanced GPS tracking system, Shadow Tracker™ 2000, is created for larger company fleets and government agencies, the 2000 system delivers detailed historical information with the added capability of "Real Time" tracking.
This vehicle tracking unit costs hundreds less than other GPS tracking systems, can be installed easily in any vehicle and it has the automatic wireless downloads.
www.advantrack.com   (621 words)

  
 GPS Vehicle Tracking Device Systems - GPS Tracking Devices
A vehicle tracking device and real time tracking device are “related” to the GPS system because their main functions are to track the location of your vehicle.
TravelEyes2 is an amazing GPS vehicle tracking device used for monitoring the travel activities of private vehicles, and as an aid in keeping travel records for tax purposes.
With some GPS tracking units, you can actually watch the tracked vehicle move across your computer screen.
www.gpsonsale.com /vehicletrackingdevices   (796 words)

  
 GPS Schools
Large school size compounds the difficulties that confront children and youth – from poor attitudes about school, to substance abuse, to achievement levels.
The average public school, in general, are about twice as large as the average private school.
If economically disadvantaged and minority students struggle to achieve a solid education, we would be acting in opposition to their interests by closing these schools and re-assigning a high proportion of minority children into larger schools.
www.gpsschools.org   (435 words)

  
 Centre for the Observation and Modelling of Earthquakes and Tectonics
In its simplest form a GPS receiver receives the signal from the GPS satellite and uses the code to determine its distance from the satellite.
This is achieved using more sophisticated GPS receivers that store the data received from the satellites, allowing the signals to be processed by computer at a later stage.
The COMET scientists have used GPS for a wide range of applications, such as measuring the movement of mountains and measuring ground movement during and after earthquakes.
comet.nerc.ac.uk /schoolsgps1.html   (321 words)

  
 Welcome to the Greenwich Public Schools
Schools and non-profit organizations may copy and make use of these materials within their own school districts or may republish the pages on their Web sites provided that a clear notice of source is included on the Web page.
The mission of the Greenwich Public Schools is to educate all students to their highest level of academic potential and to teach them the skills and knowledge to become capable, creative, and responsible members of society.
Any other sites claiming affiliation with or sponsorship by district staff, programs, or activities are not endorsed or sanctioned by the District, nor does the Board of Education assume any liability for the content.
www.greenwichschools.org   (182 words)

  
 Waypoint's
GPS taken behind a food services building on 700 block of Amhurst, which is is very close to the geographical center of the Claremont Colleges complex.
GPS is a composit of the Administration Bldg.
This preparatory school is accredited by the Western Association of Schools and Colleges.
www.waypoint.org /gp523ca.htm   (1538 words)

  
 Reversal of fortunes for Sydney Boys' High as King's is lost for wordsmiths - smh.com.au
As for the boys who are already in the GPS schools, their actions are not under scrutiny though some, notably the members of the King's First XV, have had to bear the brunt of the debate.
Other GPS schools, including Sydney Grammar, which has a tough entrance test, are looking at ways of examining the "soul" of the students and their families who want to join their communities.
This is not surprising, given that it is the GPS school most tied by bureaucratic and legislative restrictions, and the school with the greatest need, and greatest desire, to change the status quo.
www.smh.com.au /articles/2002/08/25/1030053009900.html   (773 words)

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