Metadata-based emitter localization
First Claim
1. A method comprising:
- obtaining, from a first sensing device, first information corresponding to a first radio signal received at the first sensing device from a candidate location;
determining a first reconstructed signal corresponding to the first radio signal based on the first information;
determining at least one of a first time-estimate or a first frequency-estimate based on a correlation between the first radio signal and the first reconstructed signal;
determining first metadata corresponding to the first radio signal based on at least one of the first information, the first time-estimate, or the first frequency-estimate;
obtaining, from a second sensing device, second information corresponding to a second radio signal received at the second sensing device from the candidate location;
determining a second reconstructed signal corresponding to the second radio signal based on the second information;
determining at least one of a second time-estimate or a second frequency-estimate based on correlation between the second radio signal and the second reconstructed signal;
determining second metadata corresponding to the second radio signal based on at least one of the second information, the second time-estimate, or the second frequency-estimate;
transmitting at least one of the first metadata or the second metadata to an information combining node;
obtaining, from the information combining node, at least one of the first metadata or the second metadata;
determining a relationship between the first metadata and the second metadata; and
determining the candidate location based on the first metadata, the second metadata, and the relationship between the first metadata and the second metadata,wherein transmitting at least one of the first metadata or the second metadata to the information combining node comprises restricting transmission of the first radio signal and the second radio signal to the information combining node based on a bandwidth or storage of the first sensing device, the second sensing device, or the information combining node,wherein determining the first reconstructed signal comprises minimizing a first cost metric corresponding to a difference between the first reconstructed signal and the first radio signal, andwherein determining the second reconstructed signal comprises minimizing a second cost metric corresponding to a difference between the second reconstructed signal and the second radio signal.
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Accused Products
Abstract
A method includes obtaining signal information corresponding to a plurality of radio signals received at two or more sensing devices from a candidate location, determining a plurality of reconstructed signals based on the signal information, determining time-estimates and frequency-estimates based on a correlation between the plurality of radio signals and the plurality of reconstructed signals, determining metadata corresponding to the plurality of radio signals based on the signal information, the time-estimates, or the frequency-estimates, transmitting at least a portion of the metadata to an information combining node, obtaining the portion of the metadata from the information combining node, determining a relationship between the metadata, and determining the candidate location based on the metadata and the relationship between the metadata. Transmission of the plurality of radio signals to the information combining node is restricted based on a bandwidth of the two or more sensing devices or the information combining node.
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Citations
29 Claims
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1. A method comprising:
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obtaining, from a first sensing device, first information corresponding to a first radio signal received at the first sensing device from a candidate location; determining a first reconstructed signal corresponding to the first radio signal based on the first information; determining at least one of a first time-estimate or a first frequency-estimate based on a correlation between the first radio signal and the first reconstructed signal; determining first metadata corresponding to the first radio signal based on at least one of the first information, the first time-estimate, or the first frequency-estimate; obtaining, from a second sensing device, second information corresponding to a second radio signal received at the second sensing device from the candidate location; determining a second reconstructed signal corresponding to the second radio signal based on the second information; determining at least one of a second time-estimate or a second frequency-estimate based on correlation between the second radio signal and the second reconstructed signal; determining second metadata corresponding to the second radio signal based on at least one of the second information, the second time-estimate, or the second frequency-estimate; transmitting at least one of the first metadata or the second metadata to an information combining node; obtaining, from the information combining node, at least one of the first metadata or the second metadata; determining a relationship between the first metadata and the second metadata; and determining the candidate location based on the first metadata, the second metadata, and the relationship between the first metadata and the second metadata, wherein transmitting at least one of the first metadata or the second metadata to the information combining node comprises restricting transmission of the first radio signal and the second radio signal to the information combining node based on a bandwidth or storage of the first sensing device, the second sensing device, or the information combining node, wherein determining the first reconstructed signal comprises minimizing a first cost metric corresponding to a difference between the first reconstructed signal and the first radio signal, and wherein determining the second reconstructed signal comprises minimizing a second cost metric corresponding to a difference between the second reconstructed signal and the second radio signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A non-transitory computer-readable medium storing instructions that, when executed by one or more processors, are configured to cause the one or more processors to perform operations comprising:
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obtaining, from a first sensing device, first information corresponding to a first radio signal received at the first sensing device from a candidate location; determining a first reconstructed signal corresponding to the first radio signal based on the first information; determining at least one of a first time-estimate or a first frequency-estimate based on a correlation between the first radio signal and the first reconstructed signal; determining first metadata corresponding to the first radio signal based on at least one of the first information, the first time-estimate, or the first frequency-estimate; obtaining, from a second sensing device, second information corresponding to a second radio signal received at the second sensing device from the candidate location; determining a second reconstructed signal corresponding to the second radio signal based on the second information; determining at least one of a second time-estimate or a second frequency-estimate based on correlation between the second radio signal and the second reconstructed signal; determining second metadata corresponding to the second radio signal based on at least one of the second information, the second time-estimate, or the second frequency-estimate; transmitting at least one of the first metadata or the second metadata to an information combining node; obtaining, from the information combining node, at least one of the first metadata or the second metadata; determining a relationship between the first metadata and the second metadata; and determining the candidate location based on the first metadata, the second metadata, and the relationship between the first metadata and the second metadata, wherein transmitting at least one of the first metadata or the second metadata to the information combining node comprises restricting transmission of the first radio signal and the second radio signal to the information combining node based on a bandwidth of the first sensing device, the second sensing device, or the information combining node, wherein determining the first reconstructed signal comprises minimizing a first cost metric corresponding to a difference between the first reconstructed signal and the first radio signal, and wherein determining the second reconstructed signal comprises minimizing a second cost metric corresponding to a difference between the second reconstructed signal and the second radio signal. - View Dependent Claims (27)
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28. A system comprising:
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a first sensing device and a second sensing device; one or more processors; and a storage medium storing instructions that, when executed by the one or more processors, are configured to cause the one or more processors to perform operations comprising; obtaining, from the first sensing device, first information corresponding to a first radio signal received at the first sensing device from a candidate location; determining a first reconstructed signal corresponding to the first radio signal based on the first information; determining at least one of a first time-estimate or a first frequency-estimate based on a correlation between the first radio signal and the first reconstructed signal; determining first metadata corresponding to the first radio signal based on at least one of the first information, the first time-estimate, or the first frequency-estimate; obtaining, from the second sensing device, second information corresponding to a second radio signal received at the second sensing device from the candidate location; determining a second reconstructed signal corresponding to the second radio signal based on the second information; determining at least one of a second time-estimate or a second frequency-estimate based on correlation between the second radio signal and the second reconstructed signal; determining second metadata corresponding to the second radio signal based on at least one of the second information, the second time-estimate, or the second frequency-estimate; transmitting at least one of the first metadata or the second metadata to an information combining node; obtaining, from the information combining node, at least one of the first metadata or the second metadata; determining a relationship between the first metadata and the second metadata; and determining the candidate location based on the first metadata, the second metadata, and the relationship between the first metadata and the second metadata, wherein transmitting at least one of the first metadata or the second metadata to the information combining node comprises restricting transmission of the first radio signal and the second radio signal to the information combining node based on a bandwidth of the first sensing device, the second sensing device, or the information combining node, wherein determining the first reconstructed signal comprises minimizing a first cost metric corresponding to a difference between the first reconstructed signal and the first radio signal, and wherein determining the second reconstructed signal comprises minimizing a second cost metric corresponding to a difference between the second reconstructed signal and the second radio signal. - View Dependent Claims (29)
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Specification