System and methods for direction finding using a handheld device
First Claim
Patent Images
1. A method, comprising:
- receiving transmissions comprising target identification information and data configured for use in direction of arrival estimation from targets within transmission range of a searching device;
displaying, on the searching device, a list of targets from which transmissions were received;
sending, if a desired target is missing from the list of targets, a wireless request message to activate a transmission or change transmitted signal properties in the desired target from the searching device so that the desired target may appear in the list of targets;
selecting, on the searching device, a target from the list of targets;
determining a direction from which determining, at the searching device, a relative direction from which the transmissions corresponding to the selected target were received based only on the received transmissions; and
indicating, on the searching device, the relative direction.
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Abstract
A system for indicating the relative direction of a target object or location as determined from the current position of a wireless communication device. The system employs Direction of Arrival determination using an antenna array for indicating the direction of a target device and includes facilities to activate a location-indicating transmission in a target device, the ability to request that a location-indicating transmission be activated in a remote target device, relevant information reception from a target device and the display of all potential target devices within effective transmission range of the wireless communication device.
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Citations
21 Claims
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1. A method, comprising:
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receiving transmissions comprising target identification information and data configured for use in direction of arrival estimation from targets within transmission range of a searching device; displaying, on the searching device, a list of targets from which transmissions were received; sending, if a desired target is missing from the list of targets, a wireless request message to activate a transmission or change transmitted signal properties in the desired target from the searching device so that the desired target may appear in the list of targets; selecting, on the searching device, a target from the list of targets; determining a direction from which determining, at the searching device, a relative direction from which the transmissions corresponding to the selected target were received based only on the received transmissions; and indicating, on the searching device, the relative direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A computer program product comprising computer executable program code recorded on a computer readable storage medium, the computer executable program code comprising:
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code configured to receive transmissions comprising target identification information and data configured for use in direction of arrival estimation from targets within transmission range of a searching device; code configured to display, on the searching device, a list of targets from which transmissions were received; code configured to send, if a desired target is missing from the list of targets, a wireless request message to activate a transmission or change transmitted signal properties in the desired target from the searching device so that the desired target may appear in the list of targets; code configured to select, on the searching device, a target from the list of targets; code configured to determine, at the searching device, a relative direction from which the transmissions corresponding to the selected target were received based only on the received transmissions; and code configured to indicate, on the searching device, the relative direction. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A system, comprising:
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targets; a searching device; the searching device receiving transmissions comprising target identification information and data configured for use in direction of arrival estimation from the targets within transmission range of a searching device; the searching device displaying, on the searching device, a list of the targets from which transmissions were received; the searching device sending, if a desired target is missing from the list of targets, a request message to activate a transmission in the missing target or change transmitted signal properties in the desired target so that the missing target may appear in list of active targets; the searching device further selecting a target from the list of targets, determining a relative direction from which the transmissions corresponding to the selected target were received based only on the received transmissions and indicating the relative direction. - View Dependent Claims (21)
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Specification