Excerpt from Airborne Infrared Forest Fire Detection System Final Report A mathematic-functional representation of airborne infrared line scanners is used for development of an effective forest fire detection system. Conventional statistical descriptions of forest backgrounds are found to be useless for predicting detection probabilities. In situ fire detection probability measurements in 13 tim ber types representing the major forested areas of North America are presented. Detection probabilities approach 100 percent in the open-grown, shade intolerant timber types; but the probabilities are mar gimal (50 to 60 percent) in the more shade-tolerant types, such as Douglas-fir rain forests on the West Coast and dense hardwood forests around the Great Lakes. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.