Ultra-sensitive system for measuring distance or position
US8912949B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 26, 2010 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Apr 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/82
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
It is an object of the present invention to provide a system with which 3-dimensional position can be accurately measured.Plural UWB transmitter-receivers (1), periodically transmitting PN codes of M system and preliminarily disposed on known positions are provided, a server (3) to synchronize the plural UWB transmitter-receivers (1) is provided, an RF tag (T), attached to a moving object (20) as to receive signals (I0) synchronously and periodically transmitted from the UWB transmitter-receivers (1) and reflect the signals (I0) adding inherent tag recognition signal, is provided, and the UWB transmitter-receiver (1) is composed as to obtain the distance to the moving object (20) attached with the RF tag (T) by synchronous summation and correlative calculation of the PN codes of M system reflected by the RF tag (T).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.