Donald M Targoff

US Patent:

59559845, Sep 21, 1999

Filed:

Dec 3, 1997

Appl. No.:

8/984102

Inventors:

Michael B. Schober - Tuscon AZ
Donald M. Targoff - Oro Valley AZ

Assignee:

Raytheon Company - Lexington MA

International Classification:

G01S 7285

US Classification:

342159

Abstract:

A technique for operating a communication link in RF proximity to an operational radar. A data link waveform is employed which allows a data link receiver to detect an alert indication during normal radar operation. When the alert is detected, the system briefly inhibits radar operation to receive the information content of the data link message. A data link message rate is selected to keep the impact to radar operation at a minimum.

US Patent:

56614870, Aug 26, 1997

Filed:

Dec 26, 1995

Appl. No.:

8/578800

Inventors:

Donald M. Targoff - Tucson AZ

Assignee:

Hughes Missile Systems Company - Los Angeles CA

International Classification:

G01V 1300

US Classification:

342101

Abstract:

A center-line filter for a radar receiver is a cascade of an analog filter and a digital filter. The purpose of the filter cascade is to filter out all but a single line of a pulsed spectrum. The signal is passed through the analog filter, and then over-sampled. A sharp cutoff FIR filter is used to eliminate the remaining undesired lines. Since the analog filter already has the correct matched filter characteristic in the passband, the digital filter passband is deliberately wider and unsymmetrical. After digital filtering, the filter output is decimated to provide a desired output data rate.