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.
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.
Name / Title
Company / Classification
Phones & Addresses
Donald Targoff Vice President Air-to-Air Missiles
Raytheon Company Prepackaged Software
1151 E Hermans Rd, Tucson, AZ 85706 (520)7942757, (520)5456293, (520)7941134, (520)5456997
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