Method and apparatus for estimating geolocations
First Claim
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1. A method of estimating a geolocation of a signal emitter, the method comprising:
- acquiring collection data from a plurality of collector elements, wherein the collection data comprises data corresponding to the signal emitter and configuration and calibration information corresponding to at least one of the collector elements;
computing a plurality of candidate geolocations from the acquired collection data;
forming an emitter table to categorize the collection data by frequency and collector element;
updating the emitter table each time collection data is acquired by either associating the collection data with a collector element listed in the emitter table or forming a new collection data bin to represent the collection data; and
applying a clustering analysis to the candidate geolocations to estimate the geolocation of the signal emitter.
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Abstract
Methods and apparatus operable to estimate the geolocation of a signal emitter. In some embodiments, the methods comprise acquiring collection data from a plurality of collector elements, computing a plurality of candidate geolocations from the acquired collection data, and applying a clustering analysis to the candidate geolocations to estimate the geolocation of the signal emitter.
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Citations
19 Claims
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1. A method of estimating a geolocation of a signal emitter, the method comprising:
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acquiring collection data from a plurality of collector elements, wherein the collection data comprises data corresponding to the signal emitter and configuration and calibration information corresponding to at least one of the collector elements; computing a plurality of candidate geolocations from the acquired collection data; forming an emitter table to categorize the collection data by frequency and collector element; updating the emitter table each time collection data is acquired by either associating the collection data with a collector element listed in the emitter table or forming a new collection data bin to represent the collection data; and applying a clustering analysis to the candidate geolocations to estimate the geolocation of the signal emitter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of estimating a geolocation of a signal emitter, the method comprising:
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acquiring collection data from a plurality of collector elements, the acquired data including data synchronously acquired by each collector element at a plurality of frequencies, wherein the collection data comprises collection platform navigation information; forming an emitter table to categorize the collection data by frequency and collector element; generating a plurality of time-difference-of-arrival/frequency-difference-of-arrival (TDOA/FDOA) pairs from the acquired collection data in the emitter table; computing a plurality of candidate geolocations utilizing the TDOA/FDOA pairs; and applying a clustering analysis to the candidate geolocations to estimate the geolocation of the signal emitter. - View Dependent Claims (8, 9)
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10. A computing element operable to estimate a geolocation of a signal emitter, the computing element comprising:
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a memory configured to store collection data acquired from a plurality of collector elements, wherein the collection data comprises the identity, location, direction, and speed of at least one of the collector elements; and a processor coupled with the memory and configured to sort the collection data by frequency and collector element, compute a plurality of candidate geolocations from the acquired collection data, and apply a clustering analysis to the candidate geolocations to estimate the geolocation of the signal emitter. - View Dependent Claims (11, 12, 13)
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14. A computer program for estimating a geolocation of a signal emitter, a least a portion of the computer program stored a computer-readable medium for operating a computing element and comprising:
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a code segment configured to acquire collection data from a plurality of collector elements, wherein the collection data comprises data corresponding to the signal emitter and configuration and calibration information corresponding to at least one of the collector elements; a code segment configured to create an emitter table for categorizing the collection data by frequency and collector element; a code segment operable to compute a plurality of candidate geolocations from the acquired collection data; and a code segment operable to apply a clustering analysis to the candidate geolocations to estimate the geolocation of the signal emitter. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification