Synthetic discriminant function automatic target recognition sys

Details Synthetic discriminant function automatic target recognition sys Synthetic discriminant function automatic target recognition sys

1999-02-16

2000-03-28

Gregory, Bernarr E.

Aeronautics and astronautics

Missile stabilization or trajectory control

Automatic guidance

244 315, 244 316, 342 52, 342 53, 342 54, 342 61, 342 62, 342 89, 342 90, 382103, F42B 1501, F41G 700

Patent

active

060420502

ABSTRACT:
Synthetic discriminant function automatic target recognition system augmented by LADAR combines, through the synthetic discriminant function (SDF), the active LADAR data of the potential target object with the passive infrared imagery of the target and background. In doing so, the system not only recognizes and classifies the target but also provides the range profile of the target object by analyzing the amplitude of the reflected return signal when appropriate. The live target scene imagery in passive infrared is detected, filtered and subsequently complex multiplied with pre-existing synthetic discriminant function to produce a two-dimensional cross-correlated surface. Analogous process is performed on the active LADAR range and intensity images of the live target scene with corresponding pre-existing synthetic discriminant function for the same target pose and scale as in the passive infrared correlation step. Ultimately, the target information thus acquired in passive infrared and active LADAR is fused to obtain a more accurate determination of the target location and classification than is possible using either infrared or LADAR alone.

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"Target signature consistency of image data fusion alternatives" by S. Rird F. Sims and Margaret A. Phillips, Society of Photo-Optical Instrumentation Engineers, pp. 743-754 (1997).

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