Satellites monitor the Earth|
Would you like to learn about satellites, how they are made, how information is registered or do you wonder how satellite information is being put to use? Maybe you would like to learn how to analyze satellite pictures? Then come on in!
|Satellite images in the Image Bank|
|Choosing Satellite Images in the main menu, you are given access to the Sarepta Image Bank. You will find daily updated weather images from the weather satellites NOAA and Meteosat. In addition there are SAR images taken by ERS-2 satellite. An area around the Svalbard archipelago in the Barents Sea has been selected. A number of SAR scenes covering the area has been identified, and the same scene will be provided every 35 days.
During 2007 the old global sea surface temperature (SST) images will be replaced of SST images from MODIS covering Europe.
|What are the satellites used for?|
|Satellite data information has during the last 20 years, been developed to become a necessary part of the basis of observation of, for instance, weather forecasting, supervision of forest fires, polar research and deforestation, military surveillance and administration, to mention but a few.|
|Earth observation - A short historical account |
|The modern space age started in October 1957 when a small metal sphere with long antennas was launched into space.
This Soviet Sputnik-1, weighing 83 kg, was the world's first artificial satellite.
|The principles of Earth observation|
|In order to be able to understand the application of satellite data, information of for instance, light, radiation, instruments, availability of data and interpretation of satellite information is necessary.|
|Processing and interpretation of satellite images|
|During interpretation of aeroplane images one works with photos as an example of what we call analogue images. By this is meant images that are represented directly by a physical size, for instance intensity, dyes or a video signal.|
|Do you want to learn more about Earth observation satellites?
For some selected satellites you may find some facts about when the satellite was placed in orbit, orbital time, satellite orbits, instruments, channels, spectral and spatial resolution.