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At this address, here's what you do: Place your pointer over the "Import Sedans" Category, and then click on Acura TL Type S. There are four vid clips from Motorweek's weekly tv car news show. I must give credit to the host of this site -- please email him with thanks if you like it!
There is a SIDE BY SIDE comparison of the 2001 and 2002 TL .. NOT type S models..
many people find this pic very interesting.
Geometry and availability of satellites is the key to GPS. If you are in an "urban canyon" (tall buildings all around) that block the satellite signals, accuracy will be poor. It takes a minimum of 3 satellites to do 2-D positioning, but 4 or more is MUCH better. In a fairly open environment, you should be seeing 6-10 satellites at all times, and the accuracy will typically be +/- 20-30 ft.
Do not confuse the accuracy of the navigation & mapping software with the accuracy of GPS. If the number of available satellites drops, the software may put more emphasis on the inputs from other sources, such as the speedo, the steering angles, etc. Mapping accuracy may degrade fairly quickly.
For more GPS info, try:http://www.trimble.com/gps/index.htm
A former GPS Engineer
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