Radar signal processing system and method for analyzing downhole oil and gas well environments
US7646334B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Sep 11, 2008 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Sep 11, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F18/2137
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radar signal processing system utilizing a specialized neural network generative topographic mapping method which employs an alternative method for characterizing multiple radar signatures wherein specialized phased-codes and wavelet waveform modulations are used. The invention comprises three layers each including a plurality of nodes: input layer, mapping layer, and output presentation layer. The input layer takes the collected signals and congregates them into groups of linear data points. The mapping layer provides a method for projecting the data into points of lower dimensions. The data is assumed to arise by first probabilistically picking a point in a low-dimensional space, mapping the point to be observed in high-dimensional input space, then adding noise. The result is a system in which radar data with multiple reflections in close proximity is manipulated into multiple signatures in systematic ways for use in downhole structure signatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.