Three-Dimensional Template Correlations for Direct-Detection Laser-Radar Target Recognition

摘要

Direct-detection laser radars can measure the range and the intensity returns from a target, with or without clutter, for each part of the target resolved in angle by the optical system. Because the ladar's angular resolution is in micro-radians, there are generally at least a few angular pixels 'on target'. In addition, for narrow pulse ladar systems, there may be ten or so sequential intensity measurements in range per pixel as the laser pulse propagates down the target's surface. The output image is, therefore, potentially a truce dimensional 'cube' of intensity measurements and quantized in the range axis by the range-bin size or 'voxel'. This is known as 'range resolved angle-angle-intensity' ladar, and one such system is being built by BMDO under the DITP effort.