Mechanisms for deriving an accurate timing signal from a noisy waveform

US9829502B2 · kind B2 · utility

Assignee

• Lockheed Martin Corporation · US

Inventors

• Richard M. Hall · Hockessin, US
• Sreerupa Das · Punta Gorda, US

Key dates

• Filing date: May 22, 2014
• Grant date: Nov 28, 2017
• Expiry date: Feb 13, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F17/142
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Deriving a clean timing signal from a waveform is disclosed. A sensor-of-interest (SOI) sample set and a waveform sample set that correspond to the SOI sample set in time is collected. The waveform sample set is partitioned into a plurality of waveform sample subsets, and the SOI sample set is partitioned into a plurality of SOI sample subsets, each SOI sample subset corresponding to one of the plurality of waveform sample subsets. A plurality of waveform sample subset angular speeds is determined, wherein each waveform sample subset angular speed corresponds to a different waveform sample subset. An aggregate mean angular speed based on the plurality of waveform sample subset angular speeds is determined. Each SOI sample subset is resampled to the aggregate mean angular speed based on the corresponding waveform sample subset angular speed to generate a plurality of resampled SOI subsets.