Systems, methods, and devices for geolocation with deployable large scale arrays
First Claim
1. A system for geolocating a signal emitting device, comprising:
- a monitoring array comprising at least four monitoring units;
wherein each of the at least four monitoring units is operable to sweep and learn a radio frequency (RF) environment in a learning period based on statistical learning techniques, thereby creating learning data including power level measurements of the RF environment;
wherein each of the at least four monitoring units is operable to form a knowledge map based on the power level measurements of the RF environment;
wherein each of the at least four monitoring units is operable to scrub a real-time spectral sweep against the knowledge map;
wherein each of the at least four monitoring units is operable to calculate a first derivative of the power level measurements and a second derivative of the power level measurements;
wherein each of the at least four monitoring units is operable to select most prominent derivatives of the first derivative and the second derivative;
wherein each of the at least four monitoring units is operable to perform a squaring function on the most prominent derivatives;
wherein each of the at least four monitoring units is operable to identify a signal of interest in the RF environment based on matched positive and negative gradients;
wherein each of the at least four monitoring units is operable to average the real-time spectral sweep, remove areas identified by the matched positive and negative gradients, and connect points between removed areas to determine a baseline;
wherein each of the at least four monitoring units is operable to subtract the baseline from the real-time spectral sweep to reveal the signal of interest;
wherein the at least four monitoring units are operable to scan independently for the signal of interest;
wherein the monitoring array is operable to calculate times of arrival and angles of arrival for the signal of interest;
wherein each of the at least four monitoring units is operable to measure the signal of interest and transmit a formatted message to other monitoring units within the monitoring array; and
wherein each of the at least four monitoring units is operable to determine a location of the signal emitting device from which the signal of interest is emitted based on calculations and measurements relating to the signal of interest.
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Accused Products
Abstract
Systems, methods, and apparatus for geolocating a signal emitting device are disclosed. A monitoring array comprises at least four monitoring units. A distance ratio between the at least four monitoring units relative to a midpoint is determined. The at least four monitoring units are operable to scan independently for a signal of interest. The at least four monitoring units are operable to calculate times of arrival and angles of arrival for the signal of interest. Each of the at least four monitoring units is operable to measure the signal of interest and transmit a formatted message to other monitoring units within the monitoring array. Each of the at least four monitoring units is operable to determine a location of the signal emitting device from which the signal of interest is emitted based on calculations and measurements relating to the signal of interest.
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Citations
20 Claims
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1. A system for geolocating a signal emitting device, comprising:
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a monitoring array comprising at least four monitoring units; wherein each of the at least four monitoring units is operable to sweep and learn a radio frequency (RF) environment in a learning period based on statistical learning techniques, thereby creating learning data including power level measurements of the RF environment; wherein each of the at least four monitoring units is operable to form a knowledge map based on the power level measurements of the RF environment; wherein each of the at least four monitoring units is operable to scrub a real-time spectral sweep against the knowledge map; wherein each of the at least four monitoring units is operable to calculate a first derivative of the power level measurements and a second derivative of the power level measurements; wherein each of the at least four monitoring units is operable to select most prominent derivatives of the first derivative and the second derivative; wherein each of the at least four monitoring units is operable to perform a squaring function on the most prominent derivatives; wherein each of the at least four monitoring units is operable to identify a signal of interest in the RF environment based on matched positive and negative gradients; wherein each of the at least four monitoring units is operable to average the real-time spectral sweep, remove areas identified by the matched positive and negative gradients, and connect points between removed areas to determine a baseline; wherein each of the at least four monitoring units is operable to subtract the baseline from the real-time spectral sweep to reveal the signal of interest; wherein the at least four monitoring units are operable to scan independently for the signal of interest; wherein the monitoring array is operable to calculate times of arrival and angles of arrival for the signal of interest; wherein each of the at least four monitoring units is operable to measure the signal of interest and transmit a formatted message to other monitoring units within the monitoring array; and wherein each of the at least four monitoring units is operable to determine a location of the signal emitting device from which the signal of interest is emitted based on calculations and measurements relating to the signal of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for identifying a signal emitting device, comprising:
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providing a deployable monitoring array comprising at least four monitoring units; at least one of the at least four monitoring units sweeping and learning a radio frequency (RF) environment in a learning period based on statistical learning techniques, thereby creating learning data including power level measurements of the RF environment; the at least one of the at least four monitoring units forming a knowledge map based on the power level measurements of the RF environment; the at least one of the at least four monitoring units scrubbing a real-time spectral sweep against the knowledge map; the at least one of the at least four monitoring units calculating a first derivative of the power level measurements and a second derivative of the power level measurements; the at least one of the at least four monitoring units selecting most prominent derivatives of the first derivative and the second derivative; the at least one of the at least four monitoring units performing a squaring function on the most prominent derivatives; the at least one of the at least four monitoring units identifying a signal of interest in the RF environment based on matched positive and negative gradients; the at least one of the at least four monitoring units averaging the real-time spectral sweep, removing areas identified by the matched positive and negative gradients, and connecting points between removed areas to determine a baseline; the at least one of the at least four monitoring units subtracting the baseline from the real-time spectral sweep to reveal the signal of interest; the at least four monitoring units scanning independently for the signal of interest; the deployable monitoring array calculating times of arrival and angles of arrival for the signal of interest; the at least one of the at least four monitoring units measuring the signal of interest; the at least one of the at least four monitoring units transmitting a formatted message to other units within the deployable monitoring array; and the at least one of the at least four monitoring units determining a location of the signal emitting device from which the signal of interest is emitted based on calculations and measurements relating to the signal of interest. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification