Method and system for measuring flow layer velocities using correlation velocity measuring sonar
US7720629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2003 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Dec 11, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/60
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention discloses a method and a system for measuring flow layer velocities using correlation velocity measuring sonar. The present invention provides a new theoretical expression for fluid medium sonar array temporal and spatial correlation function, the velocities of each flow layer are derived by fitting experimental data and a theoretical function, or fitting absolute value operated and localized experimental data and a theoretical function. The fluid medium sonar array temporal and spatial correlation function of the present invention is succinctly expressed by Kummer function, and well coincided with the experiments. This function is applicable not only to far field region, i.e. planar wave region, but also Fraunhofer region, i.e. spherical wave region. The present invention has the merits of high measurement accuracy, small calculation load, good robustness and fast convergence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.