Radiometric Analysis of Daytime Satellite Detection

<p>A radiometric model for daylight satellite detection is developed and used to evaluate the effects of various parameters on signal-to-noise ratio (SNR). Detection of reflected sunlight from a low-earth orbit diffuse planar satellite by a single-pixel infrared photovoltaic detector is considered. Noise considered includes photon noise from the background and signal as well as thermal noise. Parameters considered include atmospheric conditions optical parameters and detector parameters. The Phillips Laboratory Expert-assisted User System an atmospheric modeling tool that employs the MODTRAN and FASCODE transmission codes is used to model wavelength-dependent atmospheric transmission and background radiance. The SNR is found to increase when the detector is placed at higher altitudes and when there is lower aerosol content in the atmosphere.</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>