QUASI-OPTICAL FOURIER METHOD OF SPATIAL STRUCTURE-ANALYSIS OF ELECTROMAGNETIC-FIELDS

Wide use of computing engineering and radiolocation and communication systems has been promoted development of new methods and means of rece iving and processing signals based on discrete transformations in orth ogonal function classes.These methods have a number of obvious advanta ges which are conditioned by compactness of representation and large p ossibilities of the analysis. A Technical realization of the devices w hich use basic function systems to describe two-dimensional signals in quasi-optics becomes a simpler one when using orthogonality propertie s of Gaussian wave beams. A multimode two-mirror open resonator (OR) ( of Fabry-Perot type) with an input partially transparent reflector is an ideal tool for orthogonal transformation of fields in the millimete r-wave region [1]. The paper reveals the concept,gives assessments to the spectral methods of recording and analyzing an electromagnetic SHF -fiel amplitude-phase structure and describes possible application met hods.