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Methods for Detecting and Eliminating Undesired Target Returns from Training…

Award Information

Agency:
Department of Defense 		Branch:
Defense Advanced Research Projects Agency 		Award ID:
53321 		Program Year/Program:
2002 / SBIR
Agency Tracking Number:
01SB1-0133 		Solicitation Year:
N/A 		Solicitation Topic Code:
N/A 		Solicitation Number:
N/A
Small Business Information
ALPHATECH, INC.
6 New England Executive Park Burlington, MA 01803
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2002
Title: Methods for Detecting and Eliminating Undesired Target Returns from Training Data in Adaptive Radar Processing
Agency / Branch: DOD / DARPA
Contract: DAAH01-02-C-R122
Award Amount: $247,728.00
 

Abstract:

"Recent studies have shown that the performance of Space-Time Adaptive Processing (STAP) degrades when there are moving targets in the secondary training data. Although a variety of techniques have been proposed for controlling the effects of targets inthe secondary data (TSD), these techniques generally do not take advantage of external information. We are developing knowledge-based STAP (KBSTAP) approaches that include three techniques for predicting regions in the CPI data cube that are likely tocontain targets: (1) use ALPHATECH's MHT Tracker to project target locations from previous CPIs, (2) transform information about roads and traffic speed distribution into the CPI coordinate frame, and (3) use the output of STAP itself in an iterative loopto estimate and then remove targets responses. We are also developing two techniques for removing target responses from the training data: (1) apply a re-weighted covariance estimator after excision; (2) coherently suppress the target response using avariant of the CLEAN algorithm and estimate the clutter covariance after omitting the contaminated cells. In Phase II will refine the algorithms and demonstrate their effectiveness using high quality simulation as well as actual data."

Principal Investigator:

William Snyder
Senior Research Engineer
7812733388
wcsnyder@alphatech.com

Business Contact:

Andrew Mullin
Gen Counsel & Dir of Cont
7812733388
andy.mullin@alphatech.com
Small Business Information at Submission:

Alphatech, Inc.
6 New England Executive Park Burlington, MA 01803

EIN/Tax ID: 042654515
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No