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- Navigation (15650 bytes)
7: ...n senses and knowledge, passed by oral tradition, from navigator to apprentice.
20: ...[1976]], successfully navigated the Pacific Ocean from Hawaii to [[Tahiti]] using no instruments.
39: ... accurate land-based fixes even hundreds of miles from shore. These were made obsolete by satellite na...
43: ...measuring their [[bearing (navigation)|bearings]] from the ship. These [[lines of position]] can be pl...
55: ...7 navigational stars at any time of day or night. From a single sight, a time within a second and an e... - Global Positioning System (28209 bytes)
7: ...epartment of Defense]] and can be used by anyone, free of charge.
12: A GPS receiver decodes time signal transmissions from multiple satellites and calculates its position...
23: ...nge]]). It then decodes the satellites' locations from their radio signals and an internal database.
24: ...vation information is already known, only signals from three satellites are needed (the point is then ...
30: ...d of radio waves based on their frequencies, dual frequency receivers can actually measure the effects...
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