Method for angle of arrival determination on frequency hopping air interfaces
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United States of America Patent
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Sep 28, 2010
Grant Date -
Aug 21, 2008
app pub date -
Apr 29, 2008
filing date -
Jan 31, 2003
priority date (Note) -
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Abstract
A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in response to one or more calibration signals injected into the system at one or more of the frequencies in the hopping sequence and proximate in time to reception of the communication signal. The calibration coefficients are reflective of a frequency and time dependent parameter of a path between the antenna and wireless location sensor. The AOA is determined as a function of the calibration coefficient and the radio frequency energy of the received communication signal. Several embodiment of the method are illustrated.
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