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Topic: GPS receivers

	Garmin: What is GPS? (Site not responding. Last check: 2007-10-18)
		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.
		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 (1082 words)

	GPS Receivers (Site not responding. Last check: 2007-10-18)
		Many receivers either have an external antenna that mounts magnetically to the top of the vehicle, or the receiver itself is a module that mounts on the roof.
		These receivers are combine the antenna and receiver into one unit that typically sticks to the roof of your car with a magnetic mount.
		These GPS receivers a self-contained GPS instruments complete with displays, maps that you can download from your computer or the internet, and other features that are designed to help you when you are out sailing, or camping, or driving, or whatever.
	www.gps2traveltime.com /GPS_Receivers/gps_receivers.html (543 words)

	Bluetooth GPS Receivers \| GPS Accessories \| GPS Antennas \| Bluetooth GSP Receiver \| SiRFstarIII \| GPS Accessories \| GPS ...
		GPS map software is required in addition to the Bluetooth GPS receiver to have GPS functions on your device.
		By using the single suction windshield BT GPS receiver mount, you can place your receiver in the one area of the car that is not blocked by the thermal film, up by the rear view window.
		By using the triple suction windshield BT GPS receiver mount, you can place your receiver in the one area of the car that is not blocked by the thermal film, up by the rear view window.
	www.arkon.com /gps.php (640 words)

	Global Positioning System - Wikipedia, the free encyclopedia
		Assisted GPS is a GPS technology often used by the mobile phone because it reduces the power requirements of the mobile phone and increases the accuracy of the location obtained.
		GPS Machine Guidance is used for tractors and other large agricultural machines via auto steer or a visual aid displayed on a screen, which is extremely useful for controlled traffic and row crop operations and when spraying.
		GPS signals can also be affected by multipath issues, where the radio signals reflect off surrounding terrain; buildings, canyon walls, hard ground, etc. This delay in reaching the receiver causes inaccuracy.
	en.wikipedia.org /wiki/GPS (7450 words)

	GPS Overview, Fact Sheet, Frequently Asked Questions and Answers (Site not responding. Last check: 2007-10-18)
		GPS is a space-based radio-positioning system nominally consisting of a 24-satellite constellation that provides navigation and timing information to military and civilian users worldwide.
		GPS receivers are incorporated into nearly every type of system used by the DoD: aircraft, spacecraft, ground vehicles and ships.
		GPS consists of three main elements, or "segments." In addition to the satellites themselves -- called the "Space" segment --the system includes a worldwide satellite control network -- the "Control" segment -- and GPS receiver units -- called the "User" segment.
	gps.losangeles.af.mil /jpo/gpsoverview.htm (2212 words)

	GPS receivers - Cacheopedia
		A GPS receiver for our purposes is a small, hand-held electronics device used to receive multiple satellite signals to determine our position pratically anywhere on the globe.
		Further detail Accurancy of GPS receivers vary depending on a number of factors including time of day, weather, satellite geometry, WAAS signals, and more.
		The bare essentials a GPS unit, or GPSr, will need for succesfull use in order to hunt a cache is the ability to input and display user coordinates to three decimal places for the minutes and use WGS-84 (NAD-83) datum.
	cacheopedia.com /wiki/GPS_receivers (514 words)

	GPS Receivers
		The GPS system was originally developed by the United States Department of Defense for military applications; however, today this system is used, free of charge, by anyone with a GPS receiver unit to track their own position on earth.
		GPS devices for consumers are generally available as an add-on accessory for hand held devices such as pocket PCs and PDAs; as stand-alone devices; and as navigational systems built into dashboards of high-end automobiles.
		For example, you could choose a GPS receiver that is wearable on the wrist for tasks such as hiking or biking; or a GPS mounted in the dashboard for car navigation.
	www.pricerunner.com /ba/288/GPS-Receiver-buying-guide (1500 words)

	DGPS on Garmin Receivers
		In all cases a custom receiver (or software) is used to assemble the data in a form that is acceptable to the GPS receiver, which by standard is RTCM-104.
		Instead of a beacon receiver the correction data is sent via a geo-stationary satellite and is decoded by one of the regular channels already present in the GPS receiver.
		The GPS receiver then figures out which data is applicable to its current location and then applies the appropriate corrections to the receiver.
	www.gpsinformation.org /dale/dgps.htm (6010 words)

	Global Positioning System Overview
		The approximate orbital data is used to preset the receiver with the approximate position and carrier Doppler frequency (the frequency shift caused by the rate of change in range to the moving SV) of each SV in the constellation.
		Receiver position is computed from the SV positions, the measured pseudo-ranges (corrected for SV clock offsets, ionospheric delays, and relativistic effects), and a receiver position estimate (usually the last computed receiver position).
		Applying a simple position correction from the reference receiver to the remote receiver has limited effect at useful ranges because both receivers would have to be using the same set of SVs in their navigation solutions and have identical GDOP terms (not possible at different locations) to be identically affected by bias errors.
	www.colorado.edu /geography/gcraft/notes/gps/gps.html (4381 words)

	GPS Solutions - Symmetricom
		GPS stands for the Global Positioning System, and is a 24-satellite constellation that can tell you where you are in three dimensions.
		GPS navigation and position determination is based on measuring the distance from the user position to the precise locations of the GPS satellites as they orbit.
		Our time and frequency generators, receivers, and other GPS related instrumentation, were the early adopters of the GPS technology at its inception, and furthered its reliance on the GPS program as it grew to full operation with satellites hovering 20,000 plus kilometers over the earth.
	www.symmttm.com /gps-solutions.html (566 words)

	GPS Receivers
		The EGM-1001 GPS mouse antenna is a small, light and portable GPS antenna configured to work with handheld PC, pocket PC, notebook and Palm devices.
		EGH-4001 is a PDA cradle with GPS receiver and 1.5W speaker built-ins.
		GPS 9553 Miniature Bluetooth GPS Unit is small, light weight, and easy to fit your hand.
	www.gpswebber.com /GPSReceivers/gpsreceivers.htm (293 words)

	GPS System Receivers
		A fixed GPS receiver, at a known location is set up to calculate the error in the GPS signal coming from the satellites.
		For Standard GPS, a standard "straight through" cable with a DB 9 pin male connector on one side and a DB 9 pin female connector on the other side can be used to connect the GPS to the Laptop.
		Its 5 meter cable carries power from the GPS receiver to an amplifier in the antenna and carries the amplified signal from the antenna to the receiver.
	www.ztechnology.com /GPSReceiversVer2.html (2850 words)

	Jamming GPS - Susceptibility of Some Civil GPS Receivers - GPS World
		Then, military GPS testing in the New York area in December caused a number of GPS receivers in civil aircraft to lose track of GPS signals during approach into Newark International Airport.
		This is in contrast to the narrow-correlator GPS receiver.
		The narrow-correlator receiver differs in its response from the other two receivers with regard to its 1/0 transition in the case of AM jamming, where the limit is as high as 65.5 dB.
	www.gpsworld.com /gpsworld/article/articleDetail.jsp?id=43432 (1814 words)

	GPS Receivers vs. Tracking - GPS World
		There is a popular misperception that GPS is a "tracking" technology and therefore that it can be easily misused by public agencies and private companies to monitor people's whereabouts.
		Someone who purchases a handheld GPS receiver at a sporting goods store or a car GPS receiver at an electronics store need not fear that Big Brother will hence always know her or his whereabouts.
		However, someone renting a car or a boat might ask whether the vehicle is equipped with a GPS receiver and a transmitter, as rental companies often track their vehicles.
	www.gpsworld.com /gpsworld/static/staticHtml.jsp?id=7992 (188 words)

	Stuffo "How GPS Receivers Work" (Site not responding. Last check: 2007-10-18)
		Receivers generally look to four or more satellites, however, to improve accuracy and provide precise altitude information.
		The GPS receiver figures both of these things out by analyzing high-frequency, low-power radio signals from the GPS satellites.
		The receiver can figure out how far the signal has traveled by timing how long it took the signal to arrive.
	www.stuffo.com /gps.htm (880 words)

	Howstuffworks "How GPS Receivers Work"
		As long as you have a GPS receiver and a clear view of the sky, you'll never be lost again.
		The Global Positioning System (GPS) is actually a constellation of 27 Earth-orbiting satellites (24 in operation and three extras in case one fails).
		A GPS receiver's job is to locate four or more of these satellites, figure out the distance to each, and use this information to deduce its own location.
	electronics.howstuffworks.com /gps.htm (369 words)

	GPS receivers
		Choose one that's affordable, it doesn't have to be state of the art because PocketFMS is the bag of tricks, not the GPS receiver.
		Generally, mouse-type receivers will perform better in the aircraft, because they can be placed under the windscreen whereas a sleeve sits in the cockpit's Faraday cage, shielded from the satellites.
		SupplyNet has special cables to connect your PDA to a GPS receiver, so check their website and find out if they have a cable that connects your PDA to your GPS receiver.
	www.pocketfms.com /2-GPS.asp (479 words)

	GPS Receivers
		GPS is used to establish the location of the vehicle using GPS satellites.
		With GPS receivers there is a price-performance tradeoff.
		The Trimble XRS/XR, XT and XH receivers, all have sub meter post-processed DGPS accuracy.
	www.romdas.com /products/extras/gpsrec.htm (224 words)

	GPS (Global Positioning Satellite) Page featuring Magellan and Garmin units
		Your GPS receiver listens to these signals, and in a rather complex process discovers the range to each satellite, and from that and their known positions, can determine its own position.
		Now, your GPS is limited only by its internal accuracy and the geometry of the satellites.
		GPS Store has little icons to help you choose the application (icons indicating boating, aviation, hiking, bicycling, etc).
	www.orneveien.org /adventure/gps/index.htm (566 words)

	TRAMsoft GPS receivers and navigation programs (English)
		Compact 12 channel GPS with built-in loudspeaker and antenna plus large color display with touchscreen to be placed in any kind of vehicles, particularly suitable for motor bikes.
		Compact 12 channel GPS with built-in loudspeaker and antenna plus large color display with touchscreen to be placed in any kind of vehicles.
		Some GPS receivers have a connector for an external antenna that can be fixed outside the car to improve receiption.
	www.tramsoft.ch /gps/index_en.html (2219 words)

	Supported GPS Receivers (Site not responding. Last check: 2007-10-18)
		Your handheld GPS receiver will need* to be equipped with an external antenna port to be used with our products.
		Many off-the-shelf GPS receivers have a standard connection type located on the back of the unit.
		When ordering please be sure to select the external antenna connector type which corresponds to the manufacturer and model of the handheld GPS receiver you plan on using with our product.
	www.longbeachdive.com /supported-GPS-receivers.htm (377 words)

	TeleType GPS - Pocket PC - Receivers
		A variety of GPS receiver options are available to anyone wishing to purchase a complete GPS solution.
		This receiver was built intended for professional usage such as for pilot, mobile professionals, and mariners.
		Position the receiver up on your dashboard and yet your PDA can be kept right next to you - or your passenger, or even someone sitting in the backseat of the vehicle.
	www.teletype.com /pages/gps/receivers.html (294 words)

	GPS Pilot: FAQ: GPS Guidance
		The receiver locks on to at least three satellites and uses the information received to determine the coordinates of the device.
		A standard GPS is precise to 30 feet (10 meters) in the worst; it is usually around 15 feet (5 meters).
		When you have your GPS plugged in, the date and time are given by the satellites, when there is no connection it is your Palm unit time.
	www.gpspilot.com /support/faq/gps.shtml (2823 words)

	GPS Receiver (Site not responding. Last check: 2007-10-18)
		We have been testing GPS receivers for years, and we believe these offer exceptional performance and value for money.
		Sensitivity is excellent, there is an integrated backup battery for clock and satellite ephemeris, and the receivers are WAAS capable.
		We have purchased and tested many GPS receivers over the years.
	homepages.tig.com.au /~robk/gpsrx/gpsrx01.htm (347 words)

	GPS Discount, Inc. sells name brand GPS receivers, fishfinders, marine chart plotters and topographical mapping ...
		GPS Discount, Inc. sells name brand GPS receivers, fishfinders, marine chart plotters and topographical mapping software along with other outdoor items.
		Whether you are looking to purchase Garmin or Magellan GPS units, or are looking for software for your Colormap or Streetpilot, we have it in stock.
		If you need to navigate the world with the use of a GPS unit, chances are we have it in stock.
	www.gpsdiscount.com (478 words)

	Information from Outdoor Electronics on What is GPS?
		Multi parallel channel receivers are quick to lock onto satellites when first turned on and they maintain strong locks, even in dense foliage or urban settings with tall buildings.
		most GPS receivers are accurate to within 15 meters on average.
		Newer GPS receivers with WAAS (Wide Area Augmentation System) capability can improve accuracy to less than three meters on average.
	www.oegps.com /site/1559176/page/671399 (484 words)

	IntelliGolf - IntelliGPS Certification
		If you GPS device is not listed, you will need to contact your GPS manufacturer for compatibility advice.
		While we have not personally tested or certified these GPS receivers in our Lab, there is good chance that they will function properly with IntelliGolf.
		If you have a GPS receiver that is working well with IntelliGolf, please feel free to send us an email at info@intelligolf.com with the product's full name.
	www.intelligolf.com /intelliGpsCert.asp (327 words)

	GPS Receivers (Site not responding. Last check: 2007-10-18)
		Vehicle GPS navigation system by Magellan, Color TFT LCD touchscreen display, 200 addresses per user up to 600, 20 destinations per trip, 20 trips per user up to 60, features include: Route Calculator, Turn-by-Turn Navigation, Automatic Route Recalculation, Multi-Destination Routing, and QuickSpell Technology
		Vehicle GPS navigation system by Magellan, Color TFT LCD touchscreen display, 100 addresses per user up to 300, features include: pre-loaded map database of U.S. and Canada, Route Calculator, Turn-by-Turn Navigation, Automatic Route Recalculation, and QuickSpell Technology
		GPS unit by Magellan, Gray scale display, powered by (2) AA batteries
	www.superwarehouse.com /GPS_Receivers/c3/2977 (580 words)

	garmin gps v - magellan gps system - handheld gps receivers
		GPS Tutorial - In depth look into what GPS is...
		From the new Garmin V vehicle navigation gps units to the powerful new Magellan Meridian series hand held recreational gps, we have the global position systems you are looking for.
		GPS navigation is easier than ever with your Magellan RoadMate 760.
	www.123-gps.com (501 words)

	GPS Receivers by Quatech (Site not responding. Last check: 2007-10-18)
		The high-power GPs receiver combines proven technologies that allow computers to receive highly accurate positioning data for reliable tracking capabilities in diverse applications including: automobile navigation, marine navigation, aviation navigation, radiation mapping
		Quatech GPS receivers are easily integrated into any PC-based system with USB, CompactFlash or Bluetooth connectivity.
		Quatech GPS receivers are supported under PocketPC-based PDA platforms, and under Windows 98/2000/XP operating systems for laptops, tablets and desktop computers.
	www.quatech.com /catalog/gps_prod.php (251 words)

	Bluetooth GPS Receiver, Holux, iBlue, Globalsat,HAicom, Emtac, Wintec (Site not responding. Last check: 2007-10-18)
		Bluetooth GPS Receiver, Holux, iBlue, Globalsat,HAicom, Emtac, Wintec
		Rikaline GPS-6033 Bluetooth GPS Receiver 32-channel(Auto On/Off)(Free Arkon Mount)
		AVL Bluetooth GPS Receiver (BT-15) - 16 GPS channels(FREE Arkon Mount)
	www.buygpsnow.com /bluetooth-gps_9.aspx (518 words)

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