Remote sensing is a procedure which capture images of earth from space which help many people to make scientific conclusion.The capturing image is done by sensors and the sensor is carried by satellites.Depending on the revolution speed and altitude different sensors will capture different images for diff purposes. As for example different satellites will produce imagery which will be useful for some specific scientific interpretations.View the file given in HydroGeeks to see the differences. Some geographic features will be visible in some imagery some will be not.Some examples are given in the HydroGeek blog. If you consider the above infos first and then buy your imagery, your money will be well serve the purpose of your purchase. Mrinmoy www.baipatra.ws
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