Global Positioning Systems 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 operation here, and if there proves to be sufficient interest in platform-specific installation, that will be covered in a later supplement. THE BASICS GPS works by triangulation, the process of finding where you are by the angle to fixed known points. In the old method of DME position determination, you would tune one DME channel and draw a circle on your chart ....

Number Of Pages: 12

Number Of Words: 3273

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