Interbuilding and urban canyon extension solution for global positioning systems
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United States of America Patent
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Feb 13, 2001
Grant Date -
N/A
app pub date -
Jul 1, 1999
filing date -
Oct 7, 1997
priority date (Note) -
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Abstract
A global positioning system (GPS) and auxiliary receiver receive limited range position signals broadcasted from telemetry transmitters when in an urban canyon environment. The limited range receivers preferably are implemented as part of the lighting infrastructure of the environment. The limited range receivers derive power from light from the lighting infrastructure. The receivers can also include a transmitter for retransmitting the receive position data and an ID code to a central processing center.
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