On thermal emission of small-sized radiator

Abstract

Principle feasibility has been considered for a distant identification of a small-sized thermal radiator by means of detecting its thermal radiation. A single small-size radiator is phenomenologically treated within the black body model. It is shown to be possible to obtain a numeral evaluation of the temperature and the size of a small-size radiator through measurement of the thermal radiation fluctuations in case when optical image of the radiator is unavailable.