Node position measuring system
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United States of America Patent
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Jan 22, 2008
Grant Date -
Jun 22, 2006
app pub date -
Dec 5, 2005
filing date -
Dec 17, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A node position measuring system according to this invention includes a node, a reference station, base stations, a server that calculates a position of the node, and a network. The reference station includes a positioning signal reception module and a reference signal generation module that transmits a reference signal after the positioning signal reception module receives the positioning signal. Each of the base stations includes a signal reception module, a reception time measuring module that detects specific patterns from the positioning signal and the reference signal received by the signal reception module to measure a detection time, and a communication module that transmits time information, which is generated from the time measured by the reception time measuring module, to the server. The server includes a position calculation module that calculates the position of the node based on the time information transmitted from the base station.
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