Pipe survey method using UWB signal
US8350570B2 · kind B2 · utility
5Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2008 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Sep 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of surveying the condition of an underground enclosure including the steps of (a) positioning at least one transmitter/receiver unit (including an antenna) within an underground, substantially nonconductive enclosure, such that a substantial air gap exists between the antenna and the inner wall of the enclosure; (b) transmitting an ultra wideband (UWB) signal toward at least a portion of the inner wall; and (c) processing the return signal in order to identify the interface between the soil and a region of conductivity different from the soil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.