This thoroughly revised edition of an Artech House bestseller, Introduction to GPS: The Global Position System offers you an up-to-date, easy-to-understand treatment of this tremendously important technology. The second edition includes a wealth of brand new material, including a chapter on GPS satellite orbit and new coverage of today’s hottest issues, such as precise point positioning and location based services. This one-of-a-kind resource offers you the knowledge you need for your work, without bogging you down with advanced mathematics. It addresses all aspects of the GPS, emphasizes GPS applications, examines the GPS signal structure, and covers the key types of measurement being utilized in the field today. You get an in-depth discussion on the errors and biases that affect GPS measurements, along with guidance on how to overcome them. Moreover, the book shows how the GPS can be used for a number of different accuracy levels.