E350’S Nav System
04-19-2007, 02:41 AM
#26
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Join Date: Apr 2007
Location: Palm Beach Gardens, Fl
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‘08 E-350 Sport, C6 Vette & Harley Davidson
Don’t know about you guys, but sometimes I use my nav to take me to an
address .. say .. just 5 miles away, in West Palm Beach. I KNOW how to
get to West Palm Beach!
What I need is specific guidance to a specific address. As I stated above,
often the most frustrating part of an entire trip is finding the exact address
once you’re in the vicinity. That’s where you really need the help.
jimm
address .. say .. just 5 miles away, in West Palm Beach. I KNOW how to
get to West Palm Beach!
What I need is specific guidance to a specific address. As I stated above,
often the most frustrating part of an entire trip is finding the exact address
once you’re in the vicinity. That’s where you really need the help.
jimm
04-20-2007, 06:45 PM
#27
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Location: Los Angeles
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If I remeber correctly all non-military GPS satellites are basically time shifted to prevent total accuracy.
"In order to maintain control over the navigation system, the military wanted to limit access to the most accurate GPS measurements. The method they chose for this operation was to transmit inaccurate information to civilians about when the signals had been sent from the satellites. By altering the satelliteUs clocks slightly according to a specific code, those with access to the code are able to obtain accurate information while civilians are forced to deal with the inaccuracy in distance measurements resulting from the time error." -- taken from http://www.physics.hmc.edu/research/geo/gps.html
http://www.cofc.edu/olgis/survey/sswt7_technical.html Basically says the same thing.
"In order to maintain control over the navigation system, the military wanted to limit access to the most accurate GPS measurements. The method they chose for this operation was to transmit inaccurate information to civilians about when the signals had been sent from the satellites. By altering the satelliteUs clocks slightly according to a specific code, those with access to the code are able to obtain accurate information while civilians are forced to deal with the inaccuracy in distance measurements resulting from the time error." -- taken from http://www.physics.hmc.edu/research/geo/gps.html
http://www.cofc.edu/olgis/survey/sswt7_technical.html Basically says the same thing.
