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A comment on Think GPS is cool? IPS will blow your mind. Parent comment

Re:Think GPS is cool? IPS will blow your mind by jf271 on Tuesday April 24, 2012 @07:45PM (#3886933)
WAAS is a combination of GPS and ground stations. It is accurate to about 6 feet. Widely used in aviation.
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Re:Think GPS is cool? IPS will blow your mind by modeless on Tuesday April 24, 2012 @08:17PM (#3887033)
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.
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Re:Think GPS is cool? IPS will blow your mind by toomuchtodo on Wednesday April 25, 2012 @02:49AM (#3888005)
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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