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Coherent Laser Vision System

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Tech ID: 94
Project Overview
This work will develop a prototype fiber-optic based coherent laser vision system (CLVS) for the DOE EM robotics program. The CLVS will provide 3D vision for monitoring situations requiring that geometrics be updated once per second. The CLVS will implement innovations in fiber-optic multiplexed scanning and digital receiver design that yield improved range accuracy with reduced receiver processor loading. The program will include a base phase and a continuance option phase. During the base phase, the contractor will develop a fieldable prototype CLVS. In the option phase, the contractor would develop a compact scanner and implement advanced receiver algorithms to achieve a fieldable prototype coherent laser radar 3D-vision system.

Technology Description
 The objective is to develop and demonstrate a sensor that can provide timely, accurate, and reliable three-dimensional position and orientation data in a dynamic environment. The Coherent Laser Vision System (CLVS), as illustrated in Figure 2.4-1, is a lightweight, compact, robust sensor that provides scanned images of 256 by 256 pixels at a rate of 1 frame per second. The radar uses the relatively large tuning range of injector laser diodes to achieve greater precision than available with other techniques. An eye-safe laser source is used. An acousto-optic scanner is used to steer the laser beam and enable addressability of all pixels. The project is planned in two phases. Phase I includes the development of a prototype system with a two-dimensional scanner, a frame density of 128 by 128 pixels at 1 frame per second, and a 1.5 meter depth of range. In Phase II, the receiver will be upgraded; the frame density increased to 256 by 256 pixels; and the operating range increased to beyond 5 meters.

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