MUSIC corrosion monitoring method via excitation beam forming and weighted image fusing
US10697937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2017 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Dec 19, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V2201/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention discloses a Multiple Signal Classification (MUSIC) corrosion monitoring method via excitation beam forming and weighted image fusing. Because damage-related scattering signals are weak and precision of the MUSIC algorithm is affected, the present invention first introduces excitation beam forming and two arrays into the MUSIC method, to enhance scattering signals of corrosive damage and improve their signal-to-noise ratios. Then, the two arrays serve as an excitation array or a sensor array in turn, by assigning weight to fused corrosive damage images of the two arrays, monitoring of corrosive damage in blind zones of the one-dimensional linear arrays is realized. Finally, factors related to the corrosive damage are calculated based on eigenvalues of covariance matrixes of array signals, to determine the depth of the corrosive damage. The present invention improves the positioning precision in the MUSIC corrosion monitoring, widens a monitoring range of the conventional one-dimensional linear array, and realizes evaluation of the depth of the corrosive damage, thus has wide application prospects in actual monitoring of corrosive damage in an aviation structure…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.