Applied Physics and Mathematics Annotation << Back ADAPTIVE SYNTHESIS OF DIRECTIONAL DIAGRAM A.A. MOISEEV Adaptive synthesis of directional diagram considered as adaptation method of radar image processing. It based on parameters control of array antenna elements such as partial amplification and phase shift. Partial amplification array performed using developed power transformation. Preliminary analysis showed linear procedure preference comparing with procedures of higher order on minimal distortion criterion. Transformation based on initial radio image or on its likelihood ratio. This image formed occasionally using isotropic directional diagram. Image interpreted as amplitude - phase diffraction grating and directional diagram proportional to fraunhofer diffraction intensity. At that phase shift takes into account provided by phase changer voltaic characteristic. Keywords: array antenna, directional diagram, pictorial flatness, partial amplification, diffraction grating, fraunhofer diffraction, phase changer, likelihood ratio. DOI: 10.25791/pfim.03.2025.1332 Pp. 09-16.