Recording medium for storing position estimation program, position estimation device, and position estimation method
First Claim
1. A non-transitory computer-readable recording medium having stored therein a position estimation program for causing a computer to execute a process for estimating a position of a positioning target, the process comprising:
- acquiring a plurality of pieces of error region information acquired by positioning performed plural times, by using a positioning unit to output the error region information indicating an ellipse-shaped error region represented by a position acquired from positioning performed after receiving a signal from a plurality of transmitters and a measurement error of the position,extending the error region indicated by each piece of the acquired error region information in a major axis direction, the error region having a proportion of a semi-major axis to a semi-minor axis equal to or greater than a first threshold andestimating the position of the positioning target based on an intersect region in which the extended error regions intersect with one another.
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Accused Products
Abstract
A computer executes processing of acquiring, by using a positioning unit to output error region information indicating an ellipse-shaped error region represented by a position acquired from positioning performed by receiving a signal from a plurality of transmitters and a measurement error of the position, a plurality of pieces of the error region information by performing the positioning a plurality of times, processing of extending the error region indicated by each piece of the acquired error region information in a major axis direction, and processing of estimating a position of a positioning target based on an intersect region at which the extended error regions intersect with one another.
8 Citations
16 Claims
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1. A non-transitory computer-readable recording medium having stored therein a position estimation program for causing a computer to execute a process for estimating a position of a positioning target, the process comprising:
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acquiring a plurality of pieces of error region information acquired by positioning performed plural times, by using a positioning unit to output the error region information indicating an ellipse-shaped error region represented by a position acquired from positioning performed after receiving a signal from a plurality of transmitters and a measurement error of the position, extending the error region indicated by each piece of the acquired error region information in a major axis direction, the error region having a proportion of a semi-major axis to a semi-minor axis equal to or greater than a first threshold and estimating the position of the positioning target based on an intersect region in which the extended error regions intersect with one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A position estimation device for estimating a position of a positioning target, the position estimation device comprising:
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a positioning unit configured to perform positioning a plurality of times by receiving a signal from a plurality of transmitters and to generate error region information indicating an ellipse-shaped error region represented by a position acquired by the positioning and a measurement error of the position; an extension processing unit configured to extend the error region indicated by the generated error region information in a major axis direction the error region having a proportion of a semi-major axis to a semi-minor axis equal to or greater than a first threshold; an intersect region acquisition unit configured to acquire an intersect region at which the extended error region intersects with another extended error region; and an estimation unit configured to estimate the position of the positioning target based on the intersect region at which the extended error region intersects with another extended error region. - View Dependent Claims (12, 13, 14)
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15. A position estimation method of estimating a position of a positioning target, the position estimation method comprising:
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acquiring, by using a computer, a plurality of pieces of error region information acquired from positioning performed plural times using a positioning unit to output the error region information indicating an ellipse-shaped error region represented by a position acquired from positioning performed by receiving a signal from a plurality of transmitters and a measurement error of the position; extending, by using the computer, the error region indicated by each piece of the acquired error region information in a major axis direction, the error region having a proportion of a semi-major axis to a semi-minor axis equal to or greater than a first threshold, and estimating, by using the computer, the position of the positioning target based on an intersect region in which the extended error regions intersect with one another.
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16. A position estimation device for estimating a position of a positioning target, the position estimation device comprising:
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a positioning unit configured to perform positioning by receiving a signal transmitted from a transmitter and to generate a position acquired by the positioning, degradation information of the position, and an angle of the degradation information in a major axis; an intersect region acquisition unit configured to acquire a plurality of pieces of information on the position and the angle from the positioning unit and to acquire an intersect region at which a plurality of pieces of line information specified on the basis of the degradation information and the acquired plurality of pieces of information on the position and the angle intersect with one another; an extending unit configured to extend the error region indicated by each piece of the acquired error region information in a major axis direction, the error region having a proportion of a semi-major axis to a semi-minor axis equal to or greater than a first threshold; and an estimation unit configured to estimate the position of the positioning target based on the intersect region acquired in the intersect region acquisition unit.
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Specification