Accession Number : ADA289648

Title :   Data Analysis for Bark and Leaf Reflectance Measurements,

Corporate Author : SPECTRAL SCIENCES INC BURLINGTON MA

Personal Author(s) : Gruninger, J. H. ; Robertson, D. C. ; Pervaiz, M. M.

PDF Url : ADA289648

Report Date : JUN 1992

Pagination or Media Count : 52

Abstract : This report addresses the incorporation of the effects associated with natural environments and backgrounds in the simulation models which are essential to the development of smart weapons. The effect of leaves and bark in the visible and IR spectral regions is discussed and a computational model is presented for the bi-directional reflectance (BRDF) measurement carried out by Surface Optics Corporation (SOC). A singular value decomposition (SVD) technique is used to justify an important model assumption, factorization of the spectral and angular dependencies into separate product functions. An empirical reflectance model, previously developed by Spectral Sciences, Inc. (SSI), is applied to these data. Since the leaves are translucent at shorter wavelengths, this model is expanded to include a very simple description of the directional transmittance. (MM)

Descriptors :   *INFRARED DETECTION, *TREES, *REFLECTANCE, *INFRARED RADIATION, *BACKGROUND RADIATION, COMPUTERIZED SIMULATION, OPTICAL PROPERTIES, TARGET RECOGNITION, VISIBLE SPECTRA, VEGETATION, INFRARED SPECTRA, SMART WEAPONS.

Subject Categories : Infrared Detection and Detectors
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE