Time-of-flight-ranging system and method for calibrating such a system
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United States of America Patent
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Jan 27, 2009
Grant Date -
Feb 14, 2008
app pub date -
Sep 28, 2006
filing date -
Sep 28, 2005
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Abstract
An embedded calibration mechanism and method for a time-of-flight ranging system. The calibration mechanism (200) comprises a channel (202) having known characteristics. Periodically or as part of a calibration function, a pulse is transmitted through the calibration channel (202) and parameters such transmit pulse delay time and apparent velocity are determined. The calibration parameters or measurements are used to calibrate or compensate operation or measurements from the measurement channel.
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