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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
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.
Renaissance man " ... discovered many a mechanical marvel .... The achievement of the astronauts '" opened up comparable prospects to the men of today, but of infinitely wider scope". C. LUCET, French Ambassador to the United States.· "Any future ... must inevitably pass through the channel of combined disciplines ... (from which) will arise a humanization of state-of-the-art technology, and updating of methods of Earth Science." Author unknown.·· "It is difficult to say what is impossible, for the dream of yesterday is the hope of today and reality tomorrow." ROBERT GODDARD, American physicist. This'phrase has become the symbol of NASA . • Is there a crisis of the spirit?, Bu/. Soc. Prof. Fr. en Amer. (1969) p. 9. *. La recherchespatiale [Space Research] (May 1969) p. 15. INTRODUCTION FROM GALILEO TO ALDRIN AND ARMSTRONG In 1610, Galileo observed the surface of the Moon through the lens which bears his name and announced that, contrary to official opinion, its surface was irregular and not smooth. We now know that this observation -and many others ofGalileo-was a correct one, but the opposition that always arises against research too far ahead of its time resulted in his condemnation.

Bulletin

Special Libraries Association. Geography and Map Division

Published: 1974

Total Pages: 778


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