Position estimation method for estimating position of interference signal source and position estimation system for performing the method
AssigneeElectronics and Telecommunications Research Institute
InventorsChung Sup Kim, Hyuk Je Kim, Young Jun Chong, Jong Soo Lim, Ju Yeon Hong
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Abstract
Disclosed is a position estimation method for estimating a position of an interference signal source and a position estimation system for performing the method. The position estimation method may implement an indoor delay-space analysis structure by transmitting and receiving a known signal and a virtual array structure-based direction finding algorithm in an indoor environment in which a plurality of reflected waves is present and may increase an estimation probability for the position of the interference signal source.
Claims20
A position estimation method comprising:
- extracting information of an interference signal source using an interference signal of the interference signal source detected in a propagation space;
- transmitting an analysis signal for delay-space analysis in the propagation space based on information of the interference signal source;
- receiving at least one signal occurring when the transmitted analysis signal is reflected by a structure present in the propagation space;
- analyzing a reflected wave structure in the propagation space using the received at least one signal;
- setting a variable array structure corresponding to a signal measurement environment of the propagation space based on information of the interference signal source;
- detecting a plurality of signals reflected in all directions of the propagation space by controlling a size of an aperture based on the variable array structure;
- and
- estimating a position of the inference signal source using the reflected wave structure and the plurality of signals reflected in all directions.
A position estimation apparatus comprising:
- a processor,
- wherein the processor is configured to extract information of an interference signal source using an interference signal of the interference signal source detected in a propagation space, to transmit an analysis signal for delay-space analysis in the propagation space based on information of the interference signal source, to receive at least one signal occurring when the transmitted analysis signal is reflected by a structure present in the propagation space, to analyze a reflected wave structure in the propagation space using the received at least one signal, to set a variable array structure corresponding to a signal measurement environment of the propagation space based on information of the interference signal source, to detect a plurality of signals reflected in all directions of the propagation space by controlling a size of an aperture based on the variable array structure, and to estimate a position of the inference signal source using the reflected wave structure and the plurality of signals reflected in all directions.
A position estimation system comprising:
- a plurality of antennas provided in a variable array structure in a signal measurement environment of a propagation space;
- and
- a position estimation apparatus configured to estimate a position of an interference signal source present in the propagation space using a plurality of antennas,
- wherein the position estimation apparatus is configured to extract information of the interference signal source using an interference signal of the interference signal source detected in the propagation space, and analyze a reflected wave structure in the propagation space based on information of the interference signal source, to set the variable array structure adaptive to the signal measurement environment based on information of the interference signal source, and detect a plurality of signals reflected in all directions of the propagation space by controlling a size of an aperture based on the variable array structure, and to estimate a position of the inference signal source using the reflected wave structure and the plurality of signals.
Dependencies are inferred from the claim text.