Unresolved target detection improvement by use of multiple matched filters approach at different spatial phases

摘要

A method and system for detecting a point source target using multiple matched filters are disclosed. A sensor, which is preferably an infrared focal plane array, includes a plurality of pixels for providing image data. A processor processes the image data from a selected pixel corresponding to a potential point source target and from a plurality of neighboring pixels. The system includes multiple filters having a plurality of different phases, including at least a center phase and four corner phases. The multiple filters filter the image data to obtain different filtered spatial images. A detector, which is preferably a CFAR detector, detects a target based upon the spatially filtered images from the multiple matched filters.