Method and apparatus for determining a position of a transmitter in three dimensions
First Claim
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1. A position determining method, which comprises:
- transmitting a signal via a transmitter;
receiving the signal in four receivers of an access and authorization control system, the receivers disposed separated from one another in three dimensions and not all in the same plane;
determining time intervals between a reception of the signal by each of the four receivers using an evaluation unit;
determining a signal delay time between the four receivers individually and the evaluation unit;
using the evaluation unit for determining a position of the transmitter in three dimensions using the time intervals, a placement of the four receivers, and a propagation speed of the signal in space; and
using the position of the transmitter in the access and authorization control system to access and authorize.
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Abstract
In order to determine a position of a transmitter in three dimensions, a signal transmitted by the transmitter is received by four receivers that are separated from one another in three dimensions and are not all disposed on the same plane. In which case the time intervals between a reception of the signal by the four receivers are used to determine the position of the transmitter, taking into account the configuration of the receivers and a propagation speed of the signal in space.
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Citations
13 Claims
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1. A position determining method, which comprises:
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transmitting a signal via a transmitter;
receiving the signal in four receivers of an access and authorization control system, the receivers disposed separated from one another in three dimensions and not all in the same plane;
determining time intervals between a reception of the signal by each of the four receivers using an evaluation unit;
determining a signal delay time between the four receivers individually and the evaluation unit;
using the evaluation unit for determining a position of the transmitter in three dimensions using the time intervals, a placement of the four receivers, and a propagation speed of the signal in space; and
using the position of the transmitter in the access and authorization control system to access and authorize. - View Dependent Claims (2, 3, 4, 5, 6, 7, 13)
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8. In an access and authorization control system, an apparatus for determining a position of a transmitter, comprising:
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four receivers disposed separated from one another in three dimensions and not all in the same plane for receiving a signal transmitted by the transmitter; and
an evaluation unit connected to said four receivers for determining time intervals between a reception of the signal by each of said four receivers and for determining a signal delay time between said receivers individually and said evaluation unit, and using the time intervals, a configuration of said receivers, and a propagation speed of the signal in space for determining the position of the transmitter in three dimensions, and using the position of the transmitter in the access and authorization control system to access and authorize. - View Dependent Claims (9, 10, 11)
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12. A position determining method, which comprises:
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emitting a request signal from an evaluation unit to a transmitter having a position intended to be determined, for initiating a transmission of a further signal via a transmitter;
receiving the further signal in four receivers, the receivers disposed separated from one another in three dimensions and not all in the same plane;
determining time intervals between a reception of the further signal by each of the four receivers using the evaluation unit;
determining a signal delay time between the four receivers individually and the evaluation unit; and
using the evaluation unit for determining a position of the transmitter in three dimensions using the time intervals, a placement of the four receivers, and a propagation speed of the signal in space.
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Specification