Irving Goldstein

US Patent:

53089847, May 3, 1994

Filed:

Jul 6, 1987

Appl. No.:

7/075710

Inventors:

Nathan Slawsby - Canton MA
Irving Goldstein - Sudbury MA
Joseph W. DiBiaso - Nashua NH

Assignee:

Raytheon Company - Lexington MA

International Classification:

H01L 2500
G01J 500
G01S 1300

US Classification:

250342

Abstract:

A method of processing IR signals from a repetitively scanned array of photovoltaic cells is shown to consist of the steps of: (a) subtracting IR signals received on successive scans to produce response signals corresponding only to IR signals from moving or scintillating objects; (b) generating inhibiting signals for IR signals from the edges of wind-driven clouds or from scintillating objects; and (c) inhibiting those response signals that are from the edges of moving clouds or scintillating objects.