Abstract
High quality, medium resolution satellite imagery has been available worldwide since the mid-1980s, and in the late 1990s high and very high resolution imagery became available. We now have a wide choice of data captured by satellites to help satisfy requirements in terms of scale, area of coverage, application and budget. Due to the broad range of sensors onboard current and recent satellites, most parts of the world have been covered by usable imagery and that imagery is available for download or purchase. This paper provides a brief description of the range of satellite imagery currently available, some of the applications of this imagery, and also a summary of what satellites are expected to be launched in the near future.
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