Method for high-pass filtering for echo processing in time of flight ranging systems
US6885611B2 · kind B2 · utility
7Cited by
1References
10Claims
0Family size
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Key dates
| Filing date | Sep 29, 2003 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Sep 29, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/101
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for high-pass filtering to remove DC and/or low frequency components of a receive signal from the transducer of a level measurement system. In one embodiment, the method includes generating a maximum signal profile and a minimum signal profile for the receive signal, generating a midpoint reference signal from the maximum and minimum signal profiles and subtracting the midpoint reference signal from the receive signal to produce a filtered signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.