Novel Optical Wavelet Correlator for Cluttered Target Identification

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$49,990.00
Award Year:
1993
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
20316
Agency Tracking Number:
20316
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
2 Research Court, Rockville, MD, 20850
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Xiang Y Yang
(301) 258-2701
Business Contact:
() -
Research Institute:
n/a
Abstract
We propose to develop a novel optical wavelet correlator for automatic recognition of cluttered targets. Instead of computing the correlation between the target and the reference patterns, the optical wavelet correlator computes the correlation between the wavelet transform coefficients of the target and reference patterns. It incorporates the efficient feature detection and noise suppression capabilities of wavelet transformation and the inherent high speed and two-dimensional nature of optics. The wavelet matched filter (WMF) is synthesized with the Fourier spectra of the reference pattern and the selected wavelets. This WMF replaces the conventional matched filter (CMF) in the optical wavelet correlator. When an input signal enters the wavelet correlator, the feature extraction and target identification operations are performed in a single step to produce the correlation between the WTs of the input scene and the refernce pattern. By suitably choosing the wavelet functions and their dilation factors, the proposed wavelet correlator is capable of effectively recognizing targets in the presence of clutter and noise.

* information listed above is at the time of submission.

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