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The use of air photographs as an aid to understanding and mapping natural resources has long been an established technique. The advent of satellite imagery was, and indeed by many still is, regarded as a very high altitude air photograph, but with the introduction of digital techniques the full analysis of imagery has become very sophisticated. Radar imagery presents the resource scientist with a new imaging technique that has to be understood and used, a technique which, although in many respects still in its infancy, has considerable applications potential for resources studies. Remote sensing now forms an element in study courses in the earth sciences in many major universities and a number of universities offer specialist post-graduate courses in remote sensing. Nevertheless there are a large number of earth scientists already working with imagery who have progressed from the air photograph base to satellite imagery. Such scientists may find themselves confronted with microwave or radar imagery or wish to use the imagery for surveys and find themselves hindered by a lack of understanding of the differences between radar imagery and optical imagery. Unfortunately reference to much of the literature will not be of very great help, many excellent text books on the theory and interaction of microwaves, on instrument design and construction and on the research carried out on specific target types exist, most of these are however written for specialists who are usually physicists not earth scientists.
Astronautics for Peace and Human Progress contains the proceedings of the 29th Congress of the International Astronautical Federation held in Dubrovnik, Croatia, on October 1-8, 1978. The papers explore the role of astronautics in the pursuit of peace and human progress and cover topics ranging from space exploration and communication satellites to space technology and Earth exploration from space. This book is comprised of 32 chapters and opens with a discussion on space programs of countries such as the United States, Japan, Germany, USSR, and Italy. The following chapters focus on systems for space exploration such as SPACELAB and those associated with the Voyager program and the International Solar Polar Out-of-Ecliptic Mission. The evolution of Space Power Systems is also described, along with Earth exploration from space. Spaceborne sensors, automatic data analysis, and Landsat imagery are considered. The final two sections deal with communication satellites and space technology. This monograph will appeal to space scientists and astronautical engineers.