Technique of characterizing the nature of a radiation path transfer function by a few constants
US4042928A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1976 |
| Grant date | Aug 16, 1977 |
| Priority date | — |
| Expiry date | Mar 31, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/901
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A specially generated broad band radiation signal is passed through a radiation path. The output radiation as modified by that path is compared with the transmitted radiation in a manner to characterize in the frequency domain the radiation path transfer function or the modified radiation by a few constants of a Taylor series expansion. One application of this technique is in sonar or radar work for characterizing the shape of an object in a manner independent of its velocity but with a high signal-to-noise ratio and very good resolution. The comparison of the modified radiation with the transmitted radiation in order to determine the Taylor series coefficients is accomplished by a correlation or matched filtering operation. The technique in its broadest sense also has applications for compensating communication circuits and in parameterizing human speech.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.