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Satellite Image Interpreting

Observations from instruments flown on satellites are used extensively in weather analysis. Flown onboard satellites are instruments that measure electromagnetic energy that is either reflected or emitted by our planet. These instruments are called radiometers. Two common types of radiometers are used in satellite meteorology. One type measures the amount of visible light from the sun reflected back to space by the Earth's surface or by clouds.

The second measures the amount of radiation emitted by these entities. hotographic interpretation is “the act of examining photographic images for the purpose of identifying objects and judging their significance” (Colwell, 1997). This mainly refers to its usage in military aerial reconnaissance using photographs taken from reconnaissance aircraft.Principles of image interpretation have been developed empirically for more than 150 years. The most basic of these principles are the elements of image interpretation. They are: location, size, shape, shadow, tone/color, texture, pattern, height/depth and site/situation/association.

These are routinely used when interpreting an aerial photo or analyzing a photo-like image. A well-trained image interpreter uses many of these elements during his or her analysis without really thinking about them. However, a beginner may not only have to force himself or herself to consciously evaluate an unknown object with respect to these elements, but also analyze its significance in relation to the other objects or phenomena in the photo or image.