发明名称 Node position measuring system
摘要 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.
申请公布号 US2006133271(A1) 申请公布日期 2006.06.22
申请号 US20050293215 申请日期 2005.12.05
申请人 HITACHI, LTD. 发明人 MIZUGAKI KENICHI;FUJIWARA RYOSUKE
分类号 G01S19/09;H04L12/26;G01S5/06;G01S19/42;H04W64/00 主分类号 G01S19/09
代理机构 代理人
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