LWIR sensor system with improved clutter rejection

Details LWIR sensor system with improved clutter rejection LWIR sensor system with improved clutter rejection

1982-01-20

1990-03-20

Buczinski, Stephen C.

Radiant energy

Infrared-to-visible imaging

Including detector array

250334, 250349, 35821328, H01L 2500, G02B 2610

Patent

active

049104012

ABSTRACT:
The system comprises a scanning telescope for scanning a field of view in a vertical direction. A detector array is positioned in the focal plane of the telescope for receiving radiant energy from the scanned image. The detector array comprises a plurality of elements which are positioned such that adjacent elements along the scan direction are offset with respect to each other. A processor receives output signals from each of the elements. The processor delays the signals received from leading elements in the array and adds these delayed signals to output signals from trailing elements in the array to form pseudodetector sums. Pseudodetector sums formed in this manner are geometrically filtered in a cross-scan direction and also filtered in the along scan direction.

REFERENCES:
patent: 3684374 (1972-08-01), Humphrey
patent: 3723642 (1973-03-01), Laakmann
patent: 3941923 (1976-03-01), Wheeler
patent: 4004852 (1977-01-01), Pentecost
patent: 4071853 (1978-01-01), Yamanaka
patent: 4185298 (1980-01-01), Billet et al.
patent: 4204230 (1980-05-01), Sprague
patent: 4222065 (1980-09-01), Pusch

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