发明名称 |
Radio geo-location system with advanced first received wavefront arrival determination |
摘要 |
An asset management radio location system uses time-of-arrival differentiation for random and repetitive spread spectrum, short duration pulse 'blinks' from object-attached tags, to provide a practical, continuous identification of the location of each and every object within an environment of interest, irrespective whether the object is stationary or moving. Correlation-based RF processors determine which signals received spatially diverse antennas coupled to tag transmission readers are first-to-arrive signals as transmitted from any blinking tag. An object location processor carries out time-of-arrival differentiation of first-to-arrive transmissions from any blinking tag to determine where the respective object is located within the environment.
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申请公布号 |
US6121926(A) |
申请公布日期 |
2000.09.19 |
申请号 |
US19990442710 |
申请日期 |
1999.11.19 |
申请人 |
WHERENET |
发明人 |
BELCHER, DONALD K.;BOYD, ROBERT W.;WOHL, MICHAEL A. |
分类号 |
G01S1/04;G01S5/02;G01S5/04;G01S5/06;G01S13/76;G01S13/82;G01S13/87;G01S19/11;G06K7/00;G06K17/00;(IPC1-7):G01S3/02 |
主分类号 |
G01S1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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