Passive Sub-THz Imaging

Abstract

A prototype of a multipurpose scanning radiometric imaging system of extremely high frequency range of 97-104 GHz with sensitivity of Delta T = 0.0031 K.(tau = 1s) for 1 ms <= tau <= 100 ms is presented in the work. Investigations of transmission factors of different materials are carried out for through-wall detection of different objects as well as for detection of weapons concealed under the clothing. Results of radiometric measurements of objects located on the sea surface at distances in between 10 m and 2.5 km are also given.