Ground-Based Radar Performance Improvements

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$99,905.00
Award Year:
2006
Program:
SBIR
Phase:
Phase I
Contract:
FA8718-06-C-0056
Award Id:
79170
Agency Tracking Number:
F061-207-1194
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
P.O. Box 3027, Bellevue, WA, 98009
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
151471349
Principal Investigator:
LynNickisch
Senior Research Scientist
(831) 582-4905
lj@nwra.com
Business Contact:
JoanOltman-Shay
President
(425) 644-9660
contracts-grants@nwra.com
Research Institute:
n/a
Abstract
Ground-based radars operating in the naturally or nuclear disturbed ionospheric environment can be subjected to high levels of clutter and returns from countermeasures. Effective clutter mitigation and false alarm control is required to maintain performance in high sensitivity applications such as ballistic missile or Re-entry Vehicle (RV) detection, tracking, and discrimination. We propose a performance-enhancing algorithm that mitigates clutter and false alarms while actually increasing radar sensitivity. This method is called SIFTER, for Signal Inversion For Target Extraction and Registration. Our team has already successfully applied SIFTER to radars operating in the HF band (ROTHR over-the-horizon radar and CODAR HF surface wave radar). In this proposed effort we will extend the benefit of SIFTER processing to Air Force ground-based radars. SIFTER operates by solving the inverse problem of finding the distribution of scatterers (target and clutter sources) that best reproduces the radar measurements. The inverse problem is solved using Tikhonov Regularization, a smoothing constraint that works to suppress clutter sources in the scattering volume while maintaining target returns. As the SIFTER solutions are evolved in time, spurious noise peaks that do not evolve in a way consistent with their Doppler velocity are quickly smoothed away, exposing even quite weak targets.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government