Morphological components analysis for maritime target detection
AssigneeThe Government of the United States of America, as represented by the Secretary of the Navy
InventorsMark A. Sletten, Hatim Alqadah
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Abstract
Systems and methods are provided for morphological components analysis (MCA) techniques for efficient maritime target detection. Embodiments of the present disclosure provide systems, methods, and devices for determining the free parameter λ for MCA analysis. Embodiments of the present disclosure using MCA utilize effective pre-processing step(s) that separate target signals from clutter, thereby improving the overall performance of subsequent target detection processing. Systems and methods in accordance with embodiments of the present disclosure can optimize the value of the parameter λ, significantly affecting MCA performance.
Claims20
A target detector, comprising:
- a receiver configured to receive a signal comprising a clutter component and a target component;
- and
- a signal processor, coupled to the receiver, wherein the signal processor is configured to:
- determine a first L−1 norm determined by a first sum of a first plurality of absolute values of a first plurality of vector elements for the target component, thereby determining a first channel norm for the target component,
- determine a second L−1 norm determined by a second sum of a second plurality of absolute values of a second plurality of vector elements for the clutter component, thereby determining a second channel norm of the clutter component,
- determine a relationship between the first channel norm for the target component and the second channel norm of the clutter component, and
- decompose the signal, using morphological components analysis (MCA), based on the determined relationship.
A method, comprising:
- receiving, using a processing device, a signal comprising a clutter component and a target component;
- determining a first L−1 norm determined by a first sum of a first plurality of absolute values of a first plurality of vector elements for the target component, thereby determining a first channel norm for the target component;
- determining a second L−1 norm determined by a second sum of a second plurality of absolute values of a second plurality of vector elements for the clutter component, thereby determining a second channel norm of the clutter component;
- determining, using the processing device, a relationship between the first channel norm for the target component and the second channel norm of the clutter component;
- decomposing, using the processing device, the signal, using morphological components analysis (MCA), based on the determined relationship;
- and
- detecting, using the processing device, a target based on the decomposed signal.
A radar system, comprising:
- an antenna configured to receive a signal comprising a clutter component and a target component;
- and
- a signal processor device, coupled to the antenna, wherein the signal processor device is configured to:
- determine a first L−1 norm determined by a first sum of a first plurality of absolute values of a first plurality of vector elements for the target component, thereby determining a first channel norm for the target component, and
- determine a second L−1 norm determined by a second sum of a second plurality of absolute values of a second plurality of vector elements for the clutter component, thereby determining a second channel norm of the clutter component,
- determine a relationship between the first channel norm for the target component and the second channel norm of the clutter component, and
- decompose the signal, using morphological components analysis (MCA), based on the determined relationship.
Dependencies are inferred from the claim text.