A MONOLITHIC ACT CHANNELIZED INTERCEPT SYSTEM

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$60,522.00
Award Year:
1989
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
10076
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Processing Research Inc
8027 Leesburg Pike - Ste 201, Vienna, VA, 22182
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr Verne G Nomady
(703) 893-0686
Business Contact:
() -
Research Institution:
n/a
Abstract
CURRENT "ALL DIGITAL" CHANNELIZED APPROACHES TO INTERCEPT OF SPREAD SPECTRUM/FREQUENCY HOPPING COMMUNICATIONS SIGNALS CANNOT EFFECTIVELY ADDRESS THE PROBLEMS POSTED BY "FULL BAND: (\200 MHZ) MEDIUM-FAST (> OR - 500 HPS) FREQUENCY HOPPING WAVEFORMS. HYBRID DS/FH COMMUNICATIONS WAVEFORMS POSE EVEN MORE STRINGENT PERFORMANCE REQUIREMENTS, UNSATISFIABLE BY CURRENT OR NEAR-TERM DIGITAL TECHNOLOGY. USE OF ACT TECHNOLOGY AS A DIGITALLY PROGRAMMABLE TRANSVERSAL CHANNELIZER, OPTIMIZED ALTERNATIVELY FOR EITHER "SPREAD" (HYBRID) OR "UNSPREAD) FREQUENCY HOPPING WAVEFORMS CAN PROVIDE THE ESSENTIAL FRONT END FREQUENCY PARTITIONING FUNCTION FOR A HIGH PERFORMANCE SPREAD SPECTRUM/LPI COMMUNICATIONS INTERCEPT SYSTEM. ARRANGING TWO SUCH CHANNELIZERS AS AN INTERFEREOMETER WILL ALLOW EXPLOITATION OF THE ONE ATTRIBUTE WHICH LPI EMITTERS (GENERALLY) CANNOT CONTROL; NAMELY, SPATIALLY COHERENT EMISSIONS. EFFECTING THE INTERFEROMETRIC (AOA) MEASUREMENT(S) VIA A CORRELATION TYPE OF PHASE DETECTOR INSURES COHERENT INTEGRATION PERFORMANCE; 35 TO 40 DB SNR ENHANCEMENT CAN BE EXPECTED FOR (HYBRID) HOP RATES OF 500 TO 1,000 HPS.

* information listed above is at the time of submission.

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