Position estimation system and position estimation method
US10841893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2019 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | May 21, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2205/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position estimation system (11) includes: a plurality of fixed stations (100a-100d) installed inside a building, the plurality of fixed stations (100a-100d) each measuring the signal strength of a radio signal transmitted from a mobile object (300); and a calculator configured to estimate a position of the mobile object (300) based on the signal strengths measured at the plurality of fixed stations (100a-100d), wherein each of the plurality of fixed stations (100a-100d) is installed in such a position that a distance to a top part of the mobile object (300) is equal to or less than a predetermined distance when the mobile object (300) is directly below the fixed station (100a-100d).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.