System and method for positioning

JP2025519411A5Pending Publication Date: 2026-05-25CROWD CONNECTED LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
CROWD CONNECTED LTD
Filing Date
2023-05-17
Publication Date
2026-05-25

AI Technical Summary

Technical Problem

Existing positioning technologies, such as those using Extended Kalman Filters, can result in positions that rapidly deviate from reality in complex real-world deployments, and they often require cumbersome database construction and are not robust in changing environments.

Method used

A computer-implemented method that estimates the position of a movable device by receiving observations from distributed anchors, defining a time window, estimating distances and angles, adjusting anchor positions for displacement, and calculating the device's position using these adjusted values.

Benefits of technology

This method provides accurate and robust position estimates even in noisy and changing environments, simplifying installation and avoiding the calibration overhead of traditional fingerprinting techniques.

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Abstract

A computer-implemented method (600) for estimating the position of a movable device in an environment at a required time. A first set of observations is obtained by a first sensor at various times between the device and a plurality of distributed anchors having known positions in the environment (615). For each observation obtained at a point in time within a time window (650), the distance and / or angle from the device to the anchor is estimated (640), and based on a second set of observations (625) obtained by a second sensor, the displacement of the device between the time at which the observation was obtained and the required time is estimated (660). The position of the anchor is adjusted by the displacement in order to compensate for the effect of the movement of the device (665). Based on the distance and / or angle and the adjusted anchor position, the position of the device at the required time (670, 680) is calculated.
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