发明授权
US06909396B2 METHOD AND DEVICE FOR DETERMINING THE POSITION OF AT LEAST ONE SECOND TRANSMITTING AND RECEIVING DEVICE IN RESPECT OF A FIRST TRANSMITTING AND RECEIVING DEVICE IN A PASSIVE ACCESS CONTROL SYSTEM OPERATING IN THE GHZ RANGE
有权
用于确定在GHZ范围内操作的被动访问控制系统中的第一发送和接收设备的至少一个第二发送和接收设备的位置的方法和设备
- 专利标题： METHOD AND DEVICE FOR DETERMINING THE POSITION OF AT LEAST ONE SECOND TRANSMITTING AND RECEIVING DEVICE IN RESPECT OF A FIRST TRANSMITTING AND RECEIVING DEVICE IN A PASSIVE ACCESS CONTROL SYSTEM OPERATING IN THE GHZ RANGE
- 专利标题（中）： 用于确定在GHZ范围内操作的被动访问控制系统中的第一发送和接收设备的至少一个第二发送和接收设备的位置的方法和设备
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申请号： US10689880申请日： 2003-10-21
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公开(公告)号： US06909396B2公开(公告)日： 2005-06-21
- 发明人: Mario Haselsteiner , Klaus Hofbeck , Thomas Klement , Birgit Rösel , Arnd Stielow
- 申请人： Mario Haselsteiner , Klaus Hofbeck , Thomas Klement , Birgit Rösel , Arnd Stielow
- 申请人地址： DE Munich
- 专利权人： Siemens Aktiengesellschaft
- 当前专利权人： Siemens Aktiengesellschaft
- 当前专利权人地址： DE Munich
- 代理机构： Baker Botts L.L.P.
- 优先权： DE10249866 20021025
- 主分类号： B60R25/24
- IPC分类号： B60R25/24 ; G01S7/35 ; G01S13/82 ; G01S13/84 ; G01S13/88 ; G06K7/00 ; G07C9/00
摘要：
A method for determining the position of at least one second transmitting and receiving device (3) in respect of a first transmitting and receiving device in a passive access control system operating in the GHz range, comprising the steps of using a radar method, wherein signals (f1, f2) are received in the first transmitting and receiving device on the left-hand side and right-hand side of a modulation frequency (fmod), determining the distance of two signals (f1, f2) closest to the left-hand side and right-hand side modulation frequency (fmod) wherein the distance is proportional to the distance between the first transmitting and receiving device and at least one second transmitting and receiving device (3), so that multipath propagations are not taken into consideration.
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