LOCATING A TAG IN AN AREA
First Claim
1. A system for locating a tag, the system comprising a first receiver configured to receive a signal from a tag, wherein the first receiver comprises at least two antennas each configured to receive the signal,wherein the system is configured to calculate a first angle of arrival of the signal at the first receiver based on a distance between a first set of two antennas of the first receiver and a time difference of arrival of the signal at the two antennas of the first set, wherein the tag comprises a tag antenna that is configured to transmit signals having a wide bandwidth and has a frequency independent phase center and wherein the signal is an ultra wideband signal comprising one or more pulses.
1 Assignment
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Accused Products
Abstract
A method and system for locating a tag. The system has a first receiver configured to receive a signal from a tag. The first receiver has at least two antennas each configured to receive the signal. The system is configured to calculate a first angle of arrival of the signal at the first receiver based on a distance between a first set of two antennas of the first receiver and a time difference of arrival of the signal at the two antennas of the first set. The tag has a tag antenna that is configured to transmit signals having a wide bandwidth and has a frequency independent phase center and wherein the signal is an ultra wideband signal having one or more pulses.
11 Citations
21 Claims
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1. A system for locating a tag, the system comprising a first receiver configured to receive a signal from a tag, wherein the first receiver comprises at least two antennas each configured to receive the signal,
wherein the system is configured to calculate a first angle of arrival of the signal at the first receiver based on a distance between a first set of two antennas of the first receiver and a time difference of arrival of the signal at the two antennas of the first set, wherein the tag comprises a tag antenna that is configured to transmit signals having a wide bandwidth and has a frequency independent phase center and wherein the signal is an ultra wideband signal comprising one or more pulses.
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12. A method for locating a tag, the method comprising:
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receiving a signal from a tag in a first antenna of a first receiver; receiving the signal from the tag in a second antenna of the first receiver; and calculating a first angle of arrival of the signal at the first receiver based on a distance between the first antenna and the second antenna and a time difference of arrival of the signal at the first antenna and the second antenna, wherein the tag comprises a tag antenna that is configured to transmit signals having a wide bandwidth and has a frequency independent phase center and wherein the signal is an ultra wideband signal comprising one or more pulses. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification