Mutually pumped phase conjugator for remote identification

US5317442A · kind A · utility

Assignee

• The United States of America as represented by the Secretary of the Army · US

Inventors

• Edward J. Sharp · Fort Washington, US
• Gary L. Wood · Rural Hall, US
• William W. Clark · Wexford, US
• Gregory J. Salamo · Fayetteville, US

Key dates

• Filing date: Jul 29, 1993
• Grant date: May 31, 1994
• Expiry date: Jul 29, 2013

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B10/118
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A universal IFF technique and system utilizes a real-time communication l established between both parties allowing the approximate immediate transferral of digital information with positive direction and identification of both parties achieved. A pump laser emits a first signal at a first position and a remote laser beacon emits a second signal at a second position, both signals at nominally the same wavelength. A MPPCM receives the first signal which establishes a beam fan. The MPPCM and first signal scans about a region of interest to intercept the second signal. The second signal provides a second input signal into the MPPCM so that a two-way phase conjugation signal builds up and lock-on is established.