Advanced Techniques for Ballistic Target Detection/Discrimination/Mensuration using Four-Dimensional (4-D) Radar Imaging -- Subtopic BMDO/00-003B - Ra

Vexcel Corporation proposes to define advanced signal processing techniques and methods to provide next-generation ballistic target discrimination and mensuration capabilities for the NMD radar system against emerging Midcourse and Terminal Defense Segmentthreats. Signal processing techniques previously impractical are now viable due to the recently discovered attributes of using a special method for the high-resolution 3-D imaging of coherent wideband radar data. The formation of a sequence of 3-D imagesover time provides a unique, 4-D space-time image or ?hypercube? that promises to support sophisticated target location/assessment algorithms. Any number of objects may be simultaneously imaged showing spatial relationships. The separation of the target(s)from other objects in the image cube allows detailed 3-axis target position determination and greatly mitigates decoys, chaff, and other penetration aids. Highly precise trajectory and velocity vectors are a readily available product, providing a basis forthe accurate determination of higher-order motion parameters for objects having different masses, shapes, etc. A method to realize a large reduction in the data processing requirement (compared to conventional approaches) is an attractive feature.