Variable density signal sampling

US7330602B2 · kind B2 · utility

Assignee

• The Board of Trustees of the Leland Stanford Junior University · US

Inventors

• Jin Hung Lee · Menlo Park, US
• Brad Osgood · Stanford, US
• Dwight G. Nishimura · Palo Alto, US

Key dates

• Filing date: Sep 17, 2004
• Grant date: Feb 12, 2008
• Expiry date: Mar 31, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/4824
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An optimal sampling pattern for variable density sampling of a continuous signal uses a statistical knowledge of the signal to determine an autocorrelation matrix from which a basis set is identified. Sampling is performed at locations determined from an eigenvector matrix, and the sampled output provides coefficients for the basis set. The reconstructed signal output is a summation of the multiplication of the coefficients and the basis set.