SYSTEM AND METHOD FOR LOCATING MOBILE DEVICES
First Claim
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1. A system comprising:
- a computer processor;
a three dimensional antenna coupled to the computer processor, the three dimensional antenna comprising a transmitter and a receiver; and
a mobile device comprising a receiver and a transmitter;
wherein the three dimensional antenna and the mobile device are configured to wirelessly communicate;
wherein the computer processor is configured to calculate one or more of a phase of arrival and a phase difference of arrival as a function of the wireless communication between the three dimensional antenna and the mobile device, and is further configured to calculate a distance between the three dimensional antenna and the mobile device as a function of one or more of the phase of arrival and the phase difference of arrival and the signal strength;
wherein the computer processor is configured to calculate a direction between the three dimensional antenna and the mobile device;
wherein the direction calculation comprises calculating an angular spread function of multipath scattering in the communication between the three dimensional antenna and the mobile device; and
wherein the direction calculation comprises an estimation of a propagation delay and an angle in the communication between the three dimensional antenna and the mobile device.
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Abstract
A system includes a three dimensional antenna and mobile devices that wirelessly communicate with the antenna. A phase of arrival and a phase difference of arrival are calculated, and a distance between the three dimensional antenna and the mobile device is calculated. A direction between the three dimensional antenna and the mobile device is calculated. The direction calculation includes an angular spread function of multipath scattering in the communication between the three dimensional antenna and the mobile device. The direction calculation further includes an estimation of a propagation delay and an angle in the communication between the three dimensional antenna and the mobile device.
157 Citations
20 Claims
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1. A system comprising:
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a computer processor; a three dimensional antenna coupled to the computer processor, the three dimensional antenna comprising a transmitter and a receiver; and a mobile device comprising a receiver and a transmitter; wherein the three dimensional antenna and the mobile device are configured to wirelessly communicate; wherein the computer processor is configured to calculate one or more of a phase of arrival and a phase difference of arrival as a function of the wireless communication between the three dimensional antenna and the mobile device, and is further configured to calculate a distance between the three dimensional antenna and the mobile device as a function of one or more of the phase of arrival and the phase difference of arrival and the signal strength; wherein the computer processor is configured to calculate a direction between the three dimensional antenna and the mobile device; wherein the direction calculation comprises calculating an angular spread function of multipath scattering in the communication between the three dimensional antenna and the mobile device; and wherein the direction calculation comprises an estimation of a propagation delay and an angle in the communication between the three dimensional antenna and the mobile device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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a computer processor; two three dimensional antennas coupled to the computer processor, the three dimensional antennas comprising a transmitter and a receiver; and a mobile device comprising a receiver and a transmitter; wherein the three dimensional antennas are spatially separated and the mobile device is configured to wirelessly communicate with the three dimensional antennas; wherein the computer processor is configured to calculate one or more of a phase of arrival and a phase difference of arrival as a function of the wireless communication between the three dimensional antennas and the mobile device; wherein the computer processor is configured to calculate an intersection of a signal direction between a first three dimensional antenna and the mobile device, and a signal direction of a second three dimensional antenna and the mobile device, wherein the signal directions are determined by the first and second three dimensional antennas and the mobile device; wherein the direction calculation comprises calculating an angular spread function of multipath scattering in the communication between the three dimensional antennas and the mobile device; and wherein the direction calculation comprises an estimation of a propagation delay and an angle in the communication between the three dimensional antennas and the mobile device. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A process comprising:
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transmitting a signal between a three dimensional antenna and a mobile device; calculating one or more of a phase of arrival and a phase difference of arrival as a function of the signal transmitted between the three dimensional antenna and the mobile device; calculating a distance between the three dimensional antenna and the mobile device as a function of one or more of the phase of arrival and the phase difference of arrival and the signal strength; calculating a direction between the three dimensional antenna and the mobile device by calculating an angular spread function of multipath scattering in the communication between the three dimensional antenna and the mobile device; and estimating a propagation delay and an angle in the communication between the three dimensional antenna and the mobile device. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification