Method and system for locating a position of a movable device

US10609670B2 · kind B2 · utility

Assignee

• Combain Mobile AB · SE

Inventors

• Bjorn Lindquist · Bjärred, SE
• Anders Mannesson · Lund, SE
• Karl Åström · Lund, SE

Key dates

• Filing date: Mar 21, 2018
• Grant date: Mar 31, 2020
• Expiry date: Mar 21, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S5/14
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method in a movable device for locating or positioning of the movable device within an environment comprises: receiving, from an external unit, a central environment model; determining distance-dependent measurements for one or more positions of the movable device; determining a location of the movable device based on the received central environment model and the determined distance-dependent measurements, said determining comprising: forming a local environment model defining estimated locations of the wireless transmission sources and of the one or more positions of the movable device, wherein the estimated locations of the wireless transmission sources in the local environment model are updated in relation to the central environment model, wherein the updated estimated locations of the wireless transmission sources and the estimated locations of the one or more positions of the movable device are set based on a calculated error of the local environment model in relation to the determined distance-dependent measurements.