MULTIPOSITION PASSIVE RADAR COMPLEX IMPLEMENTING COMBINED ONE-STEP METHOD OF DETERMINING AIRCRAFT LOCATION AT STAGE OF LANDING

摘要

FIELD: radio engineering, communication.;SUBSTANCE: narrow-base subsystem is equipped with an active phased multi-ring antenna array and receives radio signals, synchronously demodulates them with a multi-channel quadrature receiver, and digitizes it via a multi-channel analog-to-digital converter. The central processing station estimates the position of the radiation source based on the joint processing of all received signals using a combined one-stage algorithm consisting in the formation of a decision function based on the maximum likelihood method and its subsequent optimisation and excluding the execution of intermediate calculations of time and phase delays and bearing angles.;EFFECT: increasing the accuracy of the coordinate vector estimate describing the location of the radio emission source.;3 cl, 8 dwg