METHOD FOR DETERMINING PLANNED COORDINATES OF AIR TARGET USING MULTI-POSITION RADAR SYSTEM BUILT INTO SPATIALLY DISTRIBUTED RADIO INTERFERENCE SYSTEM Russian patent published in 2023 - IPC G01S5/02 H04K3/00 

FIELD: radars.

SUBSTANCE: invention relates to a method for determining the planned coordinates of an air target in a multi-position radar system (MPRS) built into a spatially distributed radio interference system, based on an analysis of the response received in a single bistatic link “transmitter-target-receiver”. In the claimed method, an MPRS is used, built into a spatially distributed radio interference system and using the interference signal of an automated jamming station (AJS) transmitter to illuminate targets. The K-channel MPRS receiving device consists of K antennas (k =1, 2, ..., K) forming an antenna array with one central antenna and K-1 peripheral antennas, K receivers, K analogue-to-digital converters (ADC), K-channel digital computer and frequency synthesizer. In the claimed method, independent correlation processing of the transmitter signal reflected from the target is carried out in each channel of the receiving device with the determination of estimates of the delay and phase of the target responses at the points of maximum of the correlation function, the formation of a column vector of estimates of the delay of the responses of the air target registered in each channel of the receiving device, and a column vector of coefficients caused by the phase shift of the responses recorded in the central and in each peripheral channel of the receiving device. A directivity matrix of the antenna array is formed, depending on its geometric parameters and determining the phase shifts of the signals in each peripheral antenna relative to the signal in the central antenna. The direction of arrival of the signal reflected from the air target is assessed, estimation of the target-central antenna distance, and using these values an estimate of the target's rectangular coordinates is obtained.

EFFECT: determining the coordinates of an air target in the MPRS based on an analysis of the response received in a single bistatic link “transmitter-target-receiver”.

1 cl, 10 dwg