Transcription of MODULE 2 LECTURE NOTES 2 SPATIAL AND SPECTRAL …
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MODULE 2 LECTURE NOTES 2 SPATIAL AND SPECTRAL …
Remote Sensing-Remote Sensing Systems SPATIAL and SPECTRAL resolutions D Nagesh Kumar, IISc, Bangalore 1 M2L2 MODULE 2 LECTURE NOTES 2 SPATIAL AND SPECTRAL RESOLUTIONS 1. Introduction In general, the resolution is the minimum distance between two objects that can be distinguished in the image. Objects closer than the resolution appear as a single object in the image. However, in remote sensing the term resolution is used to represent the resolving power, which includes not only the capability to identify the presence of two objects, but also their properties. In qualitative terms resolution is the amount of details that can be observed in an image.
the angular cone of visibility of the sensor, or the area on the Earth’s surface that is seen at one particular moment of time. IFOV is dependent on the altitude of the sensor above the ground level and the viewing angle of the sensor. A narrow viewing angle produces a smaller IFOV as shown in Fig. 2. It can be seen that
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