Nautical Almanac

Ptolemy Of Alexandria
Ptolemy Of Alexandria
Ptolemy of Alexandria Ptolemy of Alexandria was the most influential astronomer of the ancient world. The books and theories Ptolemy developed served as a major basis for future astronomers. It was during the Renaissance period that his work became thoroughly studied and revised. Ptolemy collected all ancient knowledge of astronomy and geography including it in his book Almagest around 140 A.D. It follows, he then wrote a four volume astrological study known as the Tretrabiblos. Ptolemy claimed
Global Positioning System
Global Positioning System
Global Positioning System What is GPS? The global positioning system is a satellite-based navigation system, developed and operated by the U.S. Department of Defence, consisting of a network of 24 orbiting satellites that are eleven thousand nautical miles in space, at an inclination of 55 degrees and in six different orbital paths. The satellites are constantly moving, making two complete orbits around the Earth in just less than 24 hours. The GPS satellites are referred to as NAVSTAR satellit
Gps
Gps
Gps The new Avionics Modernization Program (AMP) systems installed in the F-111E and EF-111A have raised their share of questions, so I have decided to continue my series of Everything You Always Wanted To Know handouts to you pilots, navigators, and maintenance technicians on how the cotton-picken' thing works. This informational pamphlet is an overview of the GPS system as a whole, NOT the system- specific hardware that you find in your respective aircraft. I'll cover the basic theory of opera
Global Positioning System
Global Positioning System
Global Positioning System The Global Positioning System. What is GPS? The global positioning system is a satellite-based navigation system, developed and operated by the U.S. Department of Defence, consisting of a network of 24 orbiting satellites that are eleven thousand nautical miles in space, at an inclination of 55 degrees and in six different orbital paths. The satellites are constantly moving, making two complete orbits around the Earth in just less than 24 hours. The GPS satellites are r