Method and apparatus for pulse echo imaging
US3934458A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1974 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Feb 4, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0289
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus are provided for processing the successive echo pulses which result from the interrogation of a layered material by energy pulses, and include the direct provision from said echo pulses of the uncompensated coherent echo response of said material to thereby preserve phase information, the provision of the compensated impulse response of said material by modification of said echo response with a non-linear correction function, and the calculation of the RAYLOGRAM of said material from said impulse response. All of the above is accomplished in the complete absence of deconvolution, and said non-linear correction function includes a normalization factor to normalize the impulse response and provision for modifying the latter to compensate for energy pulse attenuation in the material to render it more accurate by satisfying the known boundary conditions of said layered material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.