Radiometric discriminator is the simplest device for comparing the radiometric brightness temperature of two following spots of antenna beam on the observed remote scene. In this case, the real signal from discriminator can be similar to the radar imaging in form of the bright points based on the difference between the metal object and the background of an absorbing or semi-absorbing environment. To realize the function of finding objects, the scanning antenna is symmetrically decided into two parts. This signal arises only when the two parts generate different levels of brightness temperatures because of a target captured in alternative pixel scanning along the observed scene. In this paper, the device named discriminator is proposed, and the operating principle and possible application is introduced for the object with Stealth coating.
The specially calculated and prepared antiradar surfaces on special ships is very good for detecting them by the
microwave radiometers. It is interesting to evaluate the possibility of using a passive millimeter wave (PMMW)
radiometric discriminator for the remote controlling and finding such objects at real distances and also for
One of the priority trend in electronics is the design of the imaging system in various spectral band of the electromagnetic waves. Multi-spectrum system is one of the critical technologies. It is principal to direct efforts for the creation multi-spectrum system in single block with simple regulation of the receiving band. First question in this field is to do the receiving pixel with tunable band for the matrix imaging system. Best candidate for this aim is Josephson Junction (JJ). The using of the JJ for this purpose can stay the new trend for the creation modern multi-spectrum passive terahertz imaging system. There proposed some analysis at the base of theoretical and experimental results of the possible noise parameters of the such pixel.