发明名称 |
Remote position determination system |
摘要 |
<p>Position determining apparatus including at least one base station including a base transmitter which periodically transmits timing signals and a plurality of mobile remote units. Each remote unit includes a mobile receiver operative to receive timing signals transmitted by at least one base transmitter; synchronization circuitry receiving the timing signals and providing a spread-spectrum frequency-hopping sequence characteristic of the particular remote unit; a mobile transmitter producing a radiated frequency-hopped signal responsive to the frequency-hopping sequence and the timing signal; and a message generator operative to modify the radiated frequency-hopped signal to transmit a message to the at least one base station. <IMAGE></p> |
申请公布号 |
EP0583522(B1) |
申请公布日期 |
1997.12.03 |
申请号 |
EP19920311871 |
申请日期 |
1992.12.30 |
申请人 |
NEXUS TELECOMMUNICATION SYSTEMS LTD. |
发明人 |
YOKEV, HANOCH;HAREL, HAIM |
分类号 |
G01S1/02;G01S3/02;G01S3/04;G01S3/10;G01S5/00;G01S5/02;G01S5/04;G01S19/03;G01S19/27;H04B1/713;H04B1/7156;H04B7/26;H04W64/00;H04W88/02;(IPC1-7):G01S5/04 |
主分类号 |
G01S1/02 |
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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