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jf271
on April 24, 2012
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Think GPS is cool? IPS will blow your mind
WAAS is a combination of GPS and ground stations. It is accurate to about 6 feet. Widely used in aviation.
modeless
on April 25, 2012
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The ground stations don't transmit to your device. WAAS still needs the satellite signals to work and so won't help indoor reception problems.
toomuchtodo
on April 25, 2012
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Correct. The ground reference stations multiplex their data to the WAAS satellite, which then pushes the data on WAAS-specific channels (hence, why your GPS receiver specifically needs to be built to support WAAS)
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