Emissivity two-dimensional distribution and dimension conversion measuring instrument and measurement method thereof

Abstract

The invention provides a method for measuring emissivity two-dimension distribution and scaling and an apparatus thereof. With the celestial vault as a cold radiation source, a blackbody cloth shed as a normal temperature radiation source, namely, a relative thermal source; a computer system which intelligently controls the blackbody cloth shed to periodically shield a target and withdraw rapidly, thus achieving the effect of alternately changing environmentally radiant illumination; the computer system is adopted to control horizontal migration of a reference board, thus realizing alternate and automatic observation of the target and the reference board; a thermal imaging system is applied as a measurement sensor, information concerning emissivity two-dimension distribution is obtained by inversion of a thermogram collected by the thermal imaging system; a plurality of combinations of secondary scale ground object components can be carried out by multi-pixel thermal infrared radiation, surface temperature and emissivity two-dimension distribution, thus being capable of carrying out researches on surface temperature and emissivity scale conversion, providing a highly effective test platform and a way to explore space scale conversion of emissivity and solve the scientific difficult problem.

Description

technical field [0001] The invention relates to the field of thermal infrared remote sensing application technology and basic research, in particular to a measuring method and instrument for two-dimensional distribution of specific emissivity and its scale conversion measurement. Background technique [0002] The surface temperature measurement of ground objects plays a very important role in many scientific research and application fields. In the field of meteorology, accurate surface temperature is a key parameter to improve the accuracy of numerical weather forecast; in the field of agriculture, accurate measurement of surface temperature is directly related to improving the accuracy of remote sensing crop yield forecast and drought estimation accuracy; in the field of national defense, Accurately measuring surface temperature can improve military target recognition and anti-camouflage capabilities; in forest security protection, accurately measuring surface temperature c...

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Problems solved by technology

[0005] However, the current research on object specific emissivity measurement technology is mainly focused on single-point measurement, and single-point measurement cannot satisfy the inversion of the two-dimensional distribution of thermal infrared radiation temperature measured by two-dimensional thermal infrared remote sensing sensors (including thermal imagers). is the two-dimensional distribution of the real surface temperature

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