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US 9,872,136 B2Granted
Method and apparatus for transmitter geo-location in mobile platforms
AssigneeIntel IP Corporation
InventorsOfer Bar-Shalom, Assaf Kasher
Life of this patent
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Abstract
Described herein are architectures, platforms and methods for implementing a direct estimation of a transmitter's position based upon raw radio frequency (RF) signals that are received by a portable device. A mathematical operation such as a maximum-likelihood estimation (MLE) algorithm, which utilizes collected snapshots from the received raw RF signals as variables, is implemented to perform direct estimation.
Claims20
A method of estimating a transmitter position, the method comprising:
- receiving radio frequency (RF) signals by a plurality of antenna arrays, wherein each antenna array comprises multiple elements;
- phase shifting the received RF signal at each element of the antenna array of the plurality of antenna arrays;
- combining the phase shifted RF signals and transforming the combined phase shifted RF signals into baseband signals;
- converting the baseband signals into digital baseband signals;
- generating a model that includes a set of snapshots of the digital baseband signals for each antenna array in the plurality of antenna arrays;
- gathering the generated models for each antenna array in the plurality of antenna arrays;
- deriving maximum likelihood estimation (MLE) based on the gathered models;
- and
- generating an estimated transmitter position based on the derived MLE.
6 more elements
A device comprising:
- a plurality of antenna arrays configured to receive radio frequency (RF) signals, wherein each antenna array comprises multiple elements;
- a phase-shifter component configured to each element of the antenna array, the phase-shifter component is configured to shift phase of the received RF signal at each element of the antenna array;
- a first combiner component configured to combine the phase shifted RF signals;
- a converter component configured to transform the combined phase shifted RF signals into baseband signals;
- an analog to digital (A/D) converter component configured to convert the baseband signals into digital baseband signals;
- a second combiner component configured to generated a model that includes a set of snapshots of the digital baseband signals for each antenna array in the plurality of antenna arrays;
- a position estimator component configured to gather the generated models for each antenna array in the plurality of antenna arrays, the position estimator component performs a maximum likelihood estimation (MLE) operation on the gathered models of the plurality of antenna arrays to generate an estimated transmitter position.
4 more elements
A receiver circuit comprising:
- a plurality of antenna arrays with multiple elements on each antenna array and configured to receive radio frequency (RF) signals on each element;
- a phase-shifter component at each element of the antenna array, the phase-shifter component configured to shift phase of the received RF signal at each element of the antenna array;
- a first combiner component configured to combine the phase shifted RF signals from each element of the antenna array;
- a converter component configured to transform the combined phase shifted RF signals into baseband signals;
- an analog to digital (A/D) converter component configured to convert the baseband signals into digital baseband signals;
- a second combiner component configured to generate a model that includes a set of snapshots of the digital baseband signals for each antenna array in the plurality of antenna arrays;
- a position estimator component configured to gather the generated models for each antenna array in the plurality of antenna arrays, the position estimator component performs a maximum likelihood estimation (MLE) operation on the gathered generated models of the plurality of antenna arrays to generate an estimated transmitter position.
4 more elements
Dependencies are inferred from the claim text.