西德从1951年开始使用航空象片研究林业,第一次航空摄影是美国空军进行的,以后由西德民航进行,个别由军队来承担。最近,他们对发展林业航空象片判读很积极。他们效仿美国的《距离观测法》拍摄。该法是借助能记录不同波长电磁幅射的高空传感器,通过400—800Hμ光谱带,利用热波摄影。 Since 1951, West Germany began to study forestry using aerial photographs. The first aerial photography was carried out by the U.S. Air Force and later by West Germany Civil Aviation, and individual armies undertook it. Recently, they have made very positive comments on the development of forestry aviation images. They follow the United States “distance observation method” shooting. The law is to use high-altitude sensors can record electromagnetic radiation of different wavelengths, through the 400-800Hμ spectral band, the use of thermal imaging.