Pulse-echo system for mediums having varying densities
US6298008A · kind A · utility
15Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1999 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Oct 18, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/908
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of measuring the position of a target feature in a pulse-echo ranging system including transmitting at least one pulse of high frequency energy from a transducer towards the target feature, receiving energy reflected back from the direction of the target feature to the transducer to provide at least one return signal, repeatedly sampling the amplitude of the return signal(s) at intervals to form a digital database relating signal amplitude to elapsed time, and searching the database for at least one target zone in which a greater than background rate of fall of the return signal amplitude is sustained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.