Cecil
11/03/2008
05:16:26 PM
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Re: Differential GPS
The need for greater accuracy in pinpointing man’s locations has spawned various kinds of GPS technologies. One of these techniques is “Differential GPS”, where it involves the use of two ground-based receivers. One receiver monitors differences in the GPS signal and communicates those differences to the other receiver. The second receiver can then correct its calculations for better accuracy.
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Jacob
11/03/2008
05:17:06 PM
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Re: Differential GPS
Another advance form of GPS is called “Carrier-phase GPS”. It uses the GPS signal’s carrier signal to improve the accuracy of its calculations. The carrier frequency is much higher than the GPS signal, which means its timing measurements will be more accurate.
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Sally
11/03/2008
05:17:47 PM
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Re: Differential GPS
Thanks Jacob. But there is still another type of GPS being developed by the aviation industry. It is called “Augmented GPS”. It involves using a geostationary satellite as a relay station for the transmission of differential corrections and the general but more accurate status of a GPS satellite. This kind of fixed earth-based satellite is important in terms of calculating satellite landings as well as providing corrections to it across an entire continent.
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