METHOD AND SYSTEM FOR LOCATING AN OBJECT
First Claim
1. A method for locating an object, comprising:
- generating a plurality of sampling points in an activity area map for an object to be located;
obtaining a conditional probability density of the object'"'"'s locating at the plurality of sampling points according to an initial electromagnetic field intensity of the plurality of sampling points and a current electromagnetic field intensity of the object to be located;
conducting resampling and updating for the sampling points according to the conditional probability density; and
determining a position of the object to be located based on coordinate values of sampling points after the updating.
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Abstract
A method and system for locating an object are disclosed. The method comprises generating a plurality of sampling points in an activity area map for an object; obtaining a conditional probability density of the object'"'"'s locating at the plurality of sampling points according to an initial electromagnetic field intensity of the plurality of sampling points and a current electromagnetic field intensity of the object to be located; conducting resampling and updating for the sampling points according to the conditional probability density; and determining a position of the object to be located based on coordinate values of sampling points after the updating. The present invention can improve the accuracy of the locating or tracking on an indoor object.
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Citations
12 Claims
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1. A method for locating an object, comprising:
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generating a plurality of sampling points in an activity area map for an object to be located; obtaining a conditional probability density of the object'"'"'s locating at the plurality of sampling points according to an initial electromagnetic field intensity of the plurality of sampling points and a current electromagnetic field intensity of the object to be located; conducting resampling and updating for the sampling points according to the conditional probability density; and determining a position of the object to be located based on coordinate values of sampling points after the updating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for locating an object, comprising:
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a sampling point generating module configured to generate a plurality of sampling points in an activity area map of an object to be located, a conditional probability density obtaining module configured to obtain a conditional probability density of the object'"'"'s locating at the plurality of sampling points according to initial electromagnetic field intensity of the plurality of sampling points and a current electromagnetic field intensity of the object; a resampling module configured to conduct resampling and updating for the sampling points according to the conditional probability density, and a locating module configured to determine a position of the object based on coordinates of the updated sampling points. - View Dependent Claims (11, 12)
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Specification