- ADS-B: Automatic Dependent Surveillance-Broadcast
 - New technology which relies on the satellite-based global positioning system to determine an aircraft's precise location in space. Information from the Cargo Airline Association. - All About GPS
- Shockwave-animation enhanced tutorial presented by Trimble Navigation.
- Consumer Reports GPS Navigation System Ratings
- Consumer Reports offers ratings and information on popular GPS navigation systems, including an overview of popular features and a buying guide.
- Galileo
- European Space Agency project to launch a series of satellites in order to create a global navigation and positioning system for civil purposes.
- Global Positioning System, The
- Outlines the system's development, capabilities, and applications.
- Global Positioning System: The Role of Atomic Clocks
- Learn how basic research into the nature of time and ways to measure time accurately contributed to development of GPS.
- Glossary of GPS Related Terms
- Lingo guide from GPS World.
- GPS Applications Exchange
- An online information source on the uses of GPS technology all over the world.
- GPS Drawing
- Project featuring a gallery of large-scale drawings derived from Global Positioning System data.
- GPS GPS
- Buyer's guides, information, and hardware reviews of popular receivers.
- GPS Lodge
- The weblog for those who love GPS systems and the things you can do with them.
- GPS Resource Library, The
- Links about the Global Positioning System (GPS) and handheld GPS units. There are links to other GPS information sites, online Internet mapping programmes, grid overlays, DGPS, GPS resellers, and related information.
- GPS Time Series
- Measurements made with the Global Positioning System are sensitive enough to detect motion of the Earth's tectonic plates.
- GPS.eu Blog
- Blog dedicated to all things GPS.
- GPS/MET
- An experiment to use signals from GPS satellites occluded by the Earth to demonstrate active limb sounding of the atmosphere.
- GPS: The New Navigation
- NOVA presents a game to show how the Global Positioning System (GPS) works.
- GPSgames.org
- Rules for world-wide GPS games: geocaching, geodashing, shutter spot, geo-golf, and geopoker.
- gpsinformation.net
- Information, software, and hardware reviews of name brand GPS receivers and PDAs, plus instructions, software, and tutorials.
- GpsPasSion
- Aims to share news, reviews, thoughts, personalised assistance, and discounts on GPS systems and navigation software for mobile platforms.
- HowStuffWorks: How GPS Receivers Work
- Explains how a pocket-sized GPS receiver locates four or more GPS satellites, figures out the distance to each, and uses this information to deduce its own location.
- Introduction to GPS Applications
- Contains applications, reviews, and a searchable index of files.
- Laptop GPS World
- Reviews and discussion forums focused on GPS navigation software programmes for laptops, tablet PCs, and ultra-mobile PCs.
- NAVSTAR GPS Joint Program Office
- Provides military operators, integrators, and acquisition agencies information and a forum to plan their tasks, shape their missions, and use GPS to the advantage of the U.S. and its Allies.
- Online NewsHour: You Are Here
- Spencer Michaels looks at how this network of satellites is changing how we get from point A to point B. From 1998.
- Southern California Integrated GPS Network (SCIGN)@
- USCG Navigation Center: GPS General Information
- Provides general information on GPS. Includes service interruption updates, status reports, NANU information, FAQs, reference information, and a form for reporting GPS problems.
- USDA Forest Service Global Positioning System (GPS) Page
- Forestry related GPS mapping and GIS applications with emphasis on receiver operation under forest canopy and in backcountry/wildland environments for land management.
- Wikipedia: Global Positioning System
- Entry on the Global Positioning System (GPS), the only fully-functional satellite navigation system.
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