why cant i see aerial photos in expert gps

Department of Agriculture (USDA) has been involved in the acquisition, use and distribution of aerial photography for more than 65 years. The first non-military aerial photography programs were developed in the 1930's as part of the Agricultural Adjustment Act. The military potential of aerial photography was obvious and aerial photography was widely used in WWI and WWII. Aerial photography quickly expanded with advances in aeronautics. It can also provide a historical perspective that allows us to view changes in landscapes overtime.Īs we learned earlier in this course, the first aerial photographs were taken from balloons, kites and even pigeons. While the quality, resolution and platforms have evolved, aerial photography is still a cornerstone of remote sensing and is becoming cheaper and more accessible than ever.Īerial photography is useful both for regional analysis and for evaluating specific sites. Since its inception, aerial photography has gone from balloons and kites, to airplane, satellites and now unmanned aircraft systems (UAS). Before the development of multispectral sensors and computers, people were using traditional photography to capture aerial images. Aerial photography is one the earliest forms of remote sensing and is still one of the most widely used and cost effective methods of remote sensing.

Why cant i see aerial photos in expert gps