SYSTEM AND METHOD FOR DETERMINING LOCATION
First Claim
1. A location determining system, the system comprising:
- a reader array including a plurality of reader groups, each group including three readers, each reader receiving a tag information signal from a tag, generating a correlation between the tag information signal and a PN (Pseudo Noise) code generated from inside, and a standard deviation with the correlation, and bypassing the tag information signal, in a case a ratio between the correlation and the standard deviation with the correlation is greater than a predetermined critical value; and
a location determining engine server determining a final location value relative to the tag using a tag information signal having a time difference of tag information signals received from the three readers forming each reader group among the tag information signals bypassed by the plurality of reader groups smaller than a predetermined marginal time difference.
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Abstract
The present invention introduces a location determining system. The location determining system includes a reader array and a location determining engine server. The reader array includes three readers, where each reader includes a plurality of reader groups that receives a tag information signal transmitted from the tag, generates a PN code generated from inside, correlation and standard deviation of the correlation, and bypasses the tag information signal, in a case a ratio of correlation and standard deviation of the correlation is greater than a predetermined critical value. The location determining engine server determines a final location value relative to the tag, using the tag information signal having a time difference of tag information signals received from the three readers forming each reader group among the tag information signals bypassed by the plurality of reader groups smaller than a predetermined marginal time difference.
12 Citations
19 Claims
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1. A location determining system, the system comprising:
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a reader array including a plurality of reader groups, each group including three readers, each reader receiving a tag information signal from a tag, generating a correlation between the tag information signal and a PN (Pseudo Noise) code generated from inside, and a standard deviation with the correlation, and bypassing the tag information signal, in a case a ratio between the correlation and the standard deviation with the correlation is greater than a predetermined critical value; and a location determining engine server determining a final location value relative to the tag using a tag information signal having a time difference of tag information signals received from the three readers forming each reader group among the tag information signals bypassed by the plurality of reader groups smaller than a predetermined marginal time difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for determining a location in a location determining system including a reader array including a plurality of reader groups, each group including three readers, and a location determining engine server determining a final location value relative to a tag using tag information signals bypassed by the plurality of reader groups, the method comprising:
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generating location values for each reader group generating location values of tag for each of the plurality of reader groups using the tag information signals; and determining the final location value by combining at least two location values among location values of tags for each of the plurality of reader groups. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification