GEOLOCATION WITH RADIO-FREQUENCY RANGING
First Claim
1. A system comprising:
- an originator device configured to transmit a first wireless signal to a transponder device;
the transponder device is configured to transmit a second wireless signal to the originator device;
an observer device configured to receive the first wireless signal from the originator device and receive the second wireless signal from the transponder device; and
a first processor configured to calculate a transactional difference range at the observer device based on the first wireless signal received at the observer device and the second wireless signal received at the observer device.
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Accused Products
Abstract
A geolocation system includes an originator device configured to transmit a first wireless signal to a transponder device. The transponder device is configured to transmit a second wireless signal to the originator device. The system includes at least one observer device configured to receive the first wireless signal from the originator device and receive the second wireless signal from the transponder device. The system also includes a first processor configured to calculate a transactional difference range at the at least one observer device based on the first wireless signal received at the observer device and the second wireless signal received at the observer device. A corrected transactional difference range value may be calculated by subtracting a time-of-flight of the first wireless signal from the originator device to the transponder device from the transactional difference range. A method of performing geolocation using a transactional difference range is also disclosed.
35 Citations
71 Claims
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1. A system comprising:
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an originator device configured to transmit a first wireless signal to a transponder device; the transponder device is configured to transmit a second wireless signal to the originator device; an observer device configured to receive the first wireless signal from the originator device and receive the second wireless signal from the transponder device; and a first processor configured to calculate a transactional difference range at the observer device based on the first wireless signal received at the observer device and the second wireless signal received at the observer device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An observer device comprising:
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a radio device configured to receive a first wireless signal from an originator device and to receive a second wireless signal from a transponder device; and a processor configured to calculate a transactional difference range at the observer device based on the first wireless signal received at the observer device and the second wireless signal received at the observer device. - View Dependent Claims (11, 12, 63, 64, 65, 71)
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10. (canceled)
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13-20. -20. (canceled)
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21. A method comprising:
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transmitting a first wireless signal from an originator device to a transponder device; transmitting a second wireless signal from the transponder device to the originator device; receiving the first wireless signal transmitted from the originator device at an observer device; receiving the second wireless signal transmitted from the transponder device at the observer device; and calculating a transactional difference range at the observer device based on the first wireless signal received at the observer device and the second wireless signal received at the observer device. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28-62. -62. (canceled)
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66. A method comprising:
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receiving, at an observer device, a first wireless signal from an originator device; receiving, at the observer device, a second wireless signal from a transponder device; and calculating a transactional difference range at the observer device based on the first wireless signal received by the observer device and the second wireless signal received by the observer device. - View Dependent Claims (67, 68, 69, 70)
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Specification