GPS and Positioning Tutorials

Some useful overviews, introductions and tutorial information on the net.
Also see Cathal Mc Daid's GPS Overview

Tutorials and Technical Information

Aerospace Corporation	Global Positioning System Primer Welcome to the Global Positioning System (GPS), What is GPS?, What is Navigation?, GPS Elements, Satellites in Space, Ground Control Stations and Receivers, How GPS Works - An Amazing System, Military Uses for GPS, GPS Uses in Everyday Life, GPS Related Links...
Joe Mehaffey and Jack Yeazel's GPS Information	GPS information, software, hardware, reviews and more.
CSD	GPS Antenna Placement Analysis for Receivers
Garmin	What is GPS?
GPS-Wireless Newsletter	Market Analysis for the Mobile Information Professional.
GPS World Online	GPS News, Articles and Resources
Canadian Space Geodesy Forum and the University of New Brunswick	GPS Manufacturers Extensive list of GPS Receiver Manufacturers, System Integrators, Equipment Suppliers, and Service Providers
GPSy	GPS Resource Library Global Positioning Systems FAQs, Tutorials and Overviews, General GPS information
maps-gps-info.com	GPS - (Almost) Everything You Wanted to Know A Brief History of GPS. In the 1970s the U. S. Department of Defense (DoD) conceived the idea of GPS out of a need to accurately determine the position of ballistic missile submarines prior to launching missiles. All the old methods of determining position had their flaws. Those methods were affected by atmospheric conditions, limited in range, subject to enemy jamming, or degraded by interference...
Northstream	Location Based Services: Considerations and Challenges (PDF) Location Based Services are already being launched. The trend is driven by both regulation and competition. · Operators are currently key, but require cooperation with other players in order to be able to offer attractive LBS. · In order to remain competitive and leverage their huge investments mobile operators should consider various aspects when offering LBS, including, network technology evolution, regulation, standardization, user acceptance, and the availability of attractive services. · This white paper discusses current trends and lists the major areas for consideration to mobile operators, when launching Location Based Services.
Sam Wormley's GPS Resources at ISU	GPS Resources extensive list of web resources.
Trimble Navigation	Tutorial - All About GPS This tutorial discusses how GPS works, defines differential GPS, and describes putting GPS to work. A good starting point for engineers learning GPS.
Peter H. Dana	GPS Overview one of the best introductions to GPS on the net.