System and method for distance measurement by inphase and quadrature signals in a radio system
First Claim
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1. A method for distance measurement using a radio system, comprising:
- measuring a coarse distance between a first radio transceiver and a second radio transceiver, the coarse distance representing a first distance measurement between the first radio transceiver and the second radio transceiver in coarse resolution;
measuring a fine distance between the first radio transceiver and the second radio transceiver, the fine distance representing a second distance measurement between the first radio transceiver and the second radio transceiver in fine resolution, determining the distance between the first radio transceiver and the second radio transceiver using the first distance measurement in conjunction with the second distance measurement.
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Abstract
A system and a method for distance measurement utilizes a radio system. The distance is measured in coarse resolution, and in fine resolution that corresponds to distance attributes. The distance between first and second radio transceivers is determined from the coarse distance and the fine distance attributes.
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Citations
25 Claims
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1. A method for distance measurement using a radio system, comprising:
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measuring a coarse distance between a first radio transceiver and a second radio transceiver, the coarse distance representing a first distance measurement between the first radio transceiver and the second radio transceiver in coarse resolution;
measuring a fine distance between the first radio transceiver and the second radio transceiver, the fine distance representing a second distance measurement between the first radio transceiver and the second radio transceiver in fine resolution, determining the distance between the first radio transceiver and the second radio transceiver using the first distance measurement in conjunction with the second distance measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for measuring distance using a radio system, comprising:
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a coarse distance measurement circuit to measure a coarse distance between a first radio transceiver and a second radio transceiver, the coarse distance representing a first distance measurement between the first radio transceiver and the second radio transceiver in coarse resolution; and
a fine distance measurement circuit to measure a fine distance between the first radio transceiver and the second radio transceiver, the fine distance representing a second distance measurement between the first radio transceiver and the second radio transceiver in fine resolution, wherein the distance between the first radio transceiver and the second radio transceiver is determined using the first distance measurement in conjunction with the second distance measurement. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A radio transceiver, comprising:
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a coarse distance measurement circuit to measure a coarse distance between the first radio transceiver and a second radio transceiver, the coarse distance representing a first distance measurement between the first radio transceiver and the second radio transceiver in coarse resolution; and
a fine distance measurement circuit to measure a fine distance between the first radio transceiver and the second radio transceiver, the fine distance representing a second distance measurement between the first radio transceiver and the second radio transceiver in fine resolution, wherein the distance between the first radio transceiver and the second radio transceiver is determined using the first distance measurement in conjunction with the second distance measurement.
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20. A method for measuring distance, comprising:
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performing a coarse distance measurement of a distance between a first radio transceiver and a second radio transceiver, said coarse distance measurement having a first resolution;
performing a fine distance measurement of the distance between the first radio transceiver and the second radio transceiver, said fine distance measurement having a second resolution that is more precise than said first resolution; and
determining the distance between the first radio transceiver and the second radio transceiver using said coarse distance measurement and said fine distance measurement. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification