Popis: |
Photography from space is limited in results by both the parameters of the photographic system and the atmosphere. As better photographic systems are developed, atmospheric effects give the ultimate limit to the quality of photography of the earth from space. The principal atmospheric effects of contrast degradation and turbulence are considered. A mathematical basis for the selection of critical photographic variables to optimize contrast is given. Computerized calculations of the ground resolution obtainable from space for various turbulence states are also given. This paper is based on two previously puolished papers from the SPIE JOURNAL (Vol. 1, No. 2 and Vol. 6, No. 1). aecause of the complicated equations and numerous illustrations in these papers, they are reproduced here to give the reader the advantage of more detail than could be obtained from the summary talk given at the Tokyo Seminar. Fragmentary experimental data from space operations indicates that the conclusions of these papers are essentially correct.© (1970) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |