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Global Positioning System Overview - These materials were developed by Peter H. Dana, Department of Geography, University of Texas at Austin, 1994. These materials may be used for study, research, and education in not-for-profit applications. If you link to or cite these materials, please credit the author, Peter H. Dana, The Geographer's Craft Project, Department of Geography, The University of Colorado at Boulder.
Garmin's GPS Guide for beginners GPS technology is rapidly changing how people find their way around the Earth. Whether it be for fun, saving lives, getting there faster, or whatever use you can dream up, GPS navigation is becoming more common every day. We hope that this guide will give you enough information to get you involved in the fun that awaits you.
GPS Primer (Aerospace Corporation) GPS is one of history's most exciting and revolutionary developments, and new uses for it are constantly being discovered. But before we learn more about GPS, it's important to understand a bit more about navigation.
Topcon's GPS Tutorial - Stones, trees, and mountains were the early examples of "points of reference". Celestial navigation was the first serious solution to the problem of finding one's position in unknown territories, where the Sun, the Moon and stars were used as points of reference. Automatic computation of position, through measurement of distances to points of reference, became a reality only recently when radio signals were employed and the age of radio navigation began. LORAN coverage is limited to about 5% of the surface of the earth where the chains are established. It is not a global system. Signals from navigation satellites can cover large areas of the earth, and several satellites can cover the whole planet.
Principles and Practice of GPS Surveying - The Global Positioning System (GPS) is a space-based, microwave, 24-hour, all-weather, global military navigation system designed, deployed, financed and managed by the U.S. military authorities. Since GPS was declared operational in mid-1993 it has had a profound impact on the art and practice of most forms of positioning and navigation. However, GPS has already had a tremendous impact on surveying, initially as a technology for "control surveys", for which purpose it was first introduced into many countries during the early 1980's -- well before the full satellite constellation was available to navigation users. In fact, the application of GPS for control surveys (or so-called "geodetic" surveys) was the first civilian use of GPS which was well beyond that for which GPS was originally intended by its military designers.
© Copyright 2007 - Samuel J. Wormley