| Summary: | 碩士 === 國立臺灣大學 === 造船工程學系 === 85 === The primary purpose of the research is to build a position
measuring system by DGPS and using this system to measure
velocity and locus of ship .First ,we use the technique of radio
and GPS to build a DGPS system and calibrate theDGPS system
based on a static point .Then,the DGPS system is used to measure
the velocity of ship.We find that the errors of the measured
value is smaller than 0.03 knots ,and in the maneuvering
performance test.The resonable result for trace of ship is
gotten. Additionally, we use RDS/DGPS system to measure location
in larger area by the channel of FM 104.9 radio station.We find
the result of RDS/ DGPS has better
accuracy than GPS.
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