Monotemporal, multitemporal, and multidate thermal infrared data acquisition from satellites for soil and surface-material survey

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Abstract
With the improvement in spatial resolution of thermal sensors over the past decade the employment of thermal infrared satellite data for soil and surface-material survey has become increasingly attractive. The individual orbital characteristics of each satellite provide the opportunity of acquiring monotemporal (same day, one time), multitemporal (same day, different times) and multidate (different days, same time) imagery. The time at which such imagery is acquired is of great importance since the emitted thermal response of any natural material is a function not only of the material's emissivity, but also of its temperature at the time of imaging. The implications of acquiring monotemporal, multitemporal and multi-date thermal infrared data are discussed in relation to thermal sensors in past, current and future satellites.

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