Method of estimating near field aberrating delays
US5268876A · kind A · utility
46Cited by
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12Claims
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Key dates
| Filing date | Jun 25, 1991 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Jun 25, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/5205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method to quantify the distortions caused by near filed variations in the propagation medium of pulse echo imaging systems. By estimating the phase lags induced by the aberrator at each point on the aperture, appropriate electronic delays might be applied to the signals associated with each array element in order to restore the system to focus. The method is capable of estimating the set of aberrating delays in an imaging phased array by using appropriate data from a single two or three dimensional pulse echo scan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.