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ADVANCED NULLING TECHNIQUES

Award Information

Agency:
Department of Defense
Branch:
Air Force
Award ID:
2221
Program Year/Program:
1986 / SBIR
Agency Tracking Number:
2221
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Pollard Road Inc.
226 Massachusetts Ave Ne Washington, DC 20002
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1986
Title: ADVANCED NULLING TECHNIQUES
Agency / Branch: DOD / USAF
Contract: N/A
Award Amount: $351,000.00
 

Abstract:

IT IS PROPOSED TO DEVELOP A SET OF ADVANCED ADAPTIVE NULLING ALGORITHMS TO ENABLE SENSOR ARRAYS TO OPERATE EFFECTIVELY IN A RAPIDLY CHANGING ELECTROMAGNETIC ENVIRONMENT CHARACTERIZED BY SPREAD-SPECTRUM SIGNALS AND SOPHISTICATED JAMMERS. AS ENVISIONED THE ADVANCED ADAPTIVE NULLING ALGORITHM WILL CONSIST OF TWO ELEMENTS: (1) A QUICK REACTION CAPABILITY (QRC) THAT ENABLES THE ARRAY TO RESPOND RAPIDLY TO SUDDEN CHANGES IN THE ELECTROMAGNETIC ENVIRONMENTS, AND (2) A FOLLOW-ON RAPIDLY-COVERGENT ITERATIVE ALGORITHM. THE QRC ALGORITHM WILL PROVIDE A MODIFIED (ALBEIT SUB-OPTIMUM) WEIGHT VECTOR TO EFFECTIVELY SUPPRESS NEW INTERFERENCE AFTER ONE OR A SMALL NUMBER OF ARRAY SAMPLES (MANY FEWER THAN REQUIRED BY THE SMI METHOD). THE FOLLOW-ON ITERATIVE COMPONENT WILL RAPIDLY BRING THE MODIFIED WEIGHT VECTOR CLOSE TO THE OPTIMUM VALUE NOTWITHSTANDING MODEST EQUIPMENT MISALIGNMENT (CONVERGENCE MUCH MORE RAPID THAN STEEPEST DESCENT). TO ASSURE HARDWARE COMPATIBILITY OF THE ALGORITHMS, AN EXAMPLE HIGHLEVEL DESIGN WILL BE DEVELOPED. THE DESIGN WILL INCLUDE THREE DIFFERENT MEASURES OF REQUIRED DIGITAL PROCESSING HARDWARE.

Principal Investigator:

Harry Lee
2025434211

Business Contact:

Small Business Information at Submission:

Pollard Road Inc.
226 Massachusetts Ave Ne Washington, DC 20002

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No