发明名称 |
METHOD AND DEVICES FOR DETERMINING THE DISTANCE BETWEEN A RADIO BEACON AND AN ONBOARD UNIT |
摘要 |
The invention relates to a method for determining the distance between a radio beacon and a vehicle device passing in front of said radio beacon, in a road toll system. A signal of a frequency having a known temporal profile is emitted. Said method consists of the following steps: the signal is captured in the other component when passing and the temporal profile of the frequency is recorded in relation to the known temporal profile; a modification in the recorded frequency profile exceeding a first threshold value is detected; two distant wave zones in the frequency profile, lying temporally in front of and behind the detected modification, which displays a frequency modification below a second threshold value, are searched for; the recorded frequency profile is scaled in such a manner that the distance wave zones take the predetermined values; and said distance a from the scaled frequency path is determined. The invention also relates to radio beacons, installations and vehicle devices for implementing the method.
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申请公布号 |
US2013069829(A1) |
申请公布日期 |
2013.03.21 |
申请号 |
US201113701489 |
申请日期 |
2011.11.29 |
申请人 |
SMELY DIETER;WINKLER JOSEF;NAGY OLIVER;PAIER ALEXANDER;POVOLNY ROBERT |
发明人 |
SMELY DIETER;WINKLER JOSEF;NAGY OLIVER;PAIER ALEXANDER;POVOLNY ROBERT |
分类号 |
G01S11/10;G07B15/06;G08G1/015 |
主分类号 |
G01S11/10 |
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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