Differential Global Positioning System Navigation Using High-Frequency Ground Wave Transmissions
نویسندگان
چکیده
ince 1992, the Strategic Systems Department of the Applied Physics Laboratory has been investigating the use of high-frequency (HF) ground wave transmissions in the upper HF band for sea-based communications. This effort has examined the optimization of shipboard antennas for two-way communications with ground stations. This article describes early tests using differential Global Positioning System navigation for investigating the accuracy of determining a ship’s position from a base station using HF ground wave transmissions. (
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