Active Multispectral Band Selection and Reflectance Measurement System

<p>Due to system design requirements an active multispectral laser radar system may be limited in the number of spectral bands that can be integrated into the system. To aid in the selection of these bands a novel multispectral band selection technique is presented based on the cross-correlation of the material class reectance spectra over a wavelength range of 1_m { 5_m. The algorithm uses directional hemispherical reectance data from the Nonconventional Exploitation Factors database to select a number of spectral bands for classication purposes. Because the target material spectral reectance is so important to the performance of an active multispectral system an experimental monostatic bidirectional reectance distribution function (BRDF) measurement system is developed and tested. A 1.06_m Nd:YAG diode pumped laser is frequency shifted to 1.58_m { 1.80_m using a periodically poled lithium niobate nonlinear crystal.</p><p>This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact and remains as true to the original work as possible. Therefore you will see the original copyright references library stamps (as most of these works have been housed in our most important libraries around the world) and other notations in the work.</p><p>This work is in the public domain in the United States of America and possibly other nations. Within the United States you may freely copy and distribute this work as no entity (individual or corporate) has a copyright on the body of the work.</p><p>As a reproduction of a historical artifact this work may contain missing or blurred pages poor pictures errant marks etc. Scholars believe and we concur that this work is important enough to be preserved reproduced and made generally available to the public. We appreciate your support of the preservation process and thank you for being an important part of keeping this knowledge alive and relevant.</p>