Incoherent light optical processor

US4755745A · kind A · utility

Assignee

• The United States of America, as represented by the Director, National Security Agency · US

Inventor

• Jonathan D. Cohen · Tel Aviv-Yafo, IL

Key dates

• Filing date: Mar 4, 1986
• Grant date: Jul 5, 1988
• Expiry date: Mar 4, 2006

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R23/17
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus is described which performs acoustooptical signal processing functions with incoherent light, which procedures were formerly possible only with coherent light devices. Specific embodiments include an optical excisor, i.e., a programmable filter; a multichannel radiometer, i.e., an apparatus which estimates the power spectrum of a signal accompanied by noise; and an ambiguity processor, i.e., a time versus frequency cross correlator.