Map Tools
- Tools for plotting latitude, longitude and UTM coordinates on many different scales of topographic maps.
- http://www.maptools.com/

Global Positioning System (GPS) Resources
- Large collection of information/education resources and links, from Iowa State University.
- http://www.edu-observatory.org/gps/gps.html

Kalman Filtering for GPS, INS, WAAS, and Navigation
- Instructor Dr. M. S. Grewal, internationally known Kalman filtering expert.
- http://members.aol.com/kfcas/index.html

ATI Global Positioning System (GPS) Technology course
- Thomas Logsdon has designed this 4-day GPS Technology short course for engineers, scientists, technicians, and managers who are involved in the design, management and applications of the Global Positioning System.
- http://www.aticourses.com/gps_technology.htm