Question
Spatial resolution
Answer :
Word Count : 614
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Spatial resolution is one of the most important characteristics of remote sensing systems. It refers to the smallest size of an object or area on the Earth's surface that can be detected or distinguished by a sensor. In simple terms, it determines the level of detail that can be observed in a remotely sensed image. Spatial resolution is commonly expressed as the ground dimensions represented by a single pixel, such as 1 metre, 10 metres, 30 metres, or 250 metres. A sensor with a smaller pixel size has higher spatial resolution and provides more detailed information about the Earth's surface. In remote sensing, each pixel in an image represents a specific area on the ground. For example, if a satellite image has a spatial resolution of 30 metres, each pixel represents a ground area measuring 30 metres by 30 metres. Objects smaller than this size may not be clearly identified, whereas larger objects can be recognized with greater accuracy. Therefore, spatial resolution directly affects the quality and usefulness of satellite imagery for different applications. High spatial resolution images capture fine details of the Earth's surface. They are useful for identifying individual buildings, roads, vehicles, small agricultural fields, and urban infrastructure. Satellites such as WorldView and GeoEye provide very high spatial resolution imagery, making them suitable
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