Invention Grant
- Patent Title: Method for measuring the time of arrival of radio signals
- Patent Title (中): 测量无线电信号到达时间的方法
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Application No.: US12181727Application Date: 2008-07-29
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Publication No.: US08130146B2Publication Date: 2012-03-06
- Inventor: John M. Belcea , Pertti O. Alapuranen
- Applicant: John M. Belcea , Pertti O. Alapuranen
- Applicant Address: US IL Schaumburg
- Assignee: Motorola Solutions, Inc.
- Current Assignee: Motorola Solutions, Inc.
- Current Assignee Address: US IL Schaumburg
- Agent Randi L. Karpinia
- Main IPC: G01S1/24
- IPC: G01S1/24

Abstract:
A method for measuring the time of arrival of radio signals within a network comprises receiving the received signals including at least a first pseudorandom code and a second pseudorandom code from at least one other node; identifying a frequency difference between the node and the other node using a phase difference between each of a maximum value of a cross-correlation provided by the first pseudorandom code and the second pseudorandom code; applying the frequency difference to the reception of the received signal; and calculating the time of arrival of the received signal comprising a time, measured with a local clock, when the cross-correlation has achieved the maximum value.
Public/Granted literature
- US20100026576A1 METHOD FOR MEASURING THE TIME OF ARRIVAL OF RADIO SIGNALS Public/Granted day:2010-02-04
Information query
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