Abstract
Abstract : The NAVSTAR constellation of the Global Positioning System (GPS) provides a unique capability. The expected visibility of its four to seven satellites anywhere anytime on the earth's surface will enable instantaneous in real time positioning of a buoy, thus eliminating complex mathematical modeling of its motion. This buoy can simultaneously be triggered to measure ranges to a network of ocean bottom transponders through acoustic link, thus replacing the conventional expensive use of a ship. The concept takes advantage of a double pyramid, which is formed between GPS satellites and the transponders linked via buoy. The measured ranges, solved in the geometric mode through the least squares method, will thus provide geodetic positions of transponders. The present paper discusses the concept details and develops the mathematical model for the system. Some simulated results of this novel approach are also included.
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