Scientific- Research Quarterly of Geographical Data (SEPEHR)

Scientific- Research Quarterly of Geographical Data (SEPEHR)

Introduction to GPS

Document Type : Research Paper

Author
Alireza Azmudeh Ardalan
Abstract
GPS (or Global Positioning System) is a NAVATAR (or Navigation System Using Time and Distance). This system is being developed by the U.S. Department of Defense. The creation of this system has begun since 1973 by combining the U.S. Air and Navy Forces’ projects. The plan of these two projects had been approved separately since 1960 for creation of a one-way navigation system.
GPS is formed by three parts, namely satellites, system controller, system users.
1- Guide to GPS Positioning D.Wells, Canadian GPS ASSOCIATES.
2- GPS Accuracy For Civil Marine Navigation. G.W. Zachmann, A paper Presented at national marine electronics association, Boston, Massachusetts, October 11, 1988.
3- GPS Perspectives. T.A.Stansell, JR., Paper Presented at international navigation congress, Sydney, Australia, February 2-5, 1988.
Scientific- Research Quarterly of Geographical Data (SEPEHR)
Volume 3, Issue 11
Autumn 1994
Pages 4-11