DGPS Software for Navigation
Advisor: Mr. Dave Senffner
Everyone uses navigation, whether it be sailing a boat, flying a plane, or just driving a car. Many areas of society would be greatly benefited by a highly accurate method of positioning. The Global Positioning System, or GPS, can provide such a method. Created by the government primarily for use by the military, GPS is a constellation of satellites which can be used to determine position and velocity using triangulation techniques.
The government, however, intentionally degrades the signal from these
satellites using what is known as selective availability. To remove this
error, a technique called differential GPS can be employed using a base
receiver at a fixed location to determine corrections. Differential corrections
can be obtained commercially for a monthly fee or paying thousands of dollars
for a base station and software. Software has been written to perform a
low-cost highly accurate differential technique by post-processing data
from a receiver at a known location and a receiver at various unknown locations.
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