METHOD OF DETERMINING RANGE TO FREQUENCY TARGETED JAMMER Russian patent published in 2019 - IPC G01S7/38 

FIELD: radar ranging and radio navigation.

SUBSTANCE: invention relates to the field of radar and can be used to determine the range to the frequency targeted jammer of noise interference (NI) of radar station (RS) in the control means of the anti-aircraft missile system (CM AMS). Method of determining the range to the main frequency targeted jammer of noise interference (NI) of radar station – RS_o, included in the CM AMS, based on a change in the carrier frequency of the probing signal (PS) of the main RS_o at time t_i, forcing a change in the frequency of interference, on measuring time interval T_i between the moment of radiation of the PS and the moment of detecting the reaction of the NI thereto, on determining the distance thereto from the expression D_oi=C(T_i/2-Δt), where D_oi – range to NI, measured by the main RS_o at time t_i, C – the speed of light, Δt – the delay time of the reaction of NI, determined by the parameters of the equipment NI, while simultaneously measuring the distance D_∂i to NI1 with additional RS_∂, also included in the CM AMS and unaffected interference, from condition D_oi=D_∂i the value of the hardware delay Δt=T_i/2-D_∂i/C is found, then at any time t_j>t_i the distance to the NI is determined with RS_o from expression D_oj=D_∂i+C(T_j-T_i)/2, where D_oj – range to NI, measured by the main RS_o at time t_j>t_i, T_j – time interval between t_j – the moment of the radiation of the PS at the changed frequency and the moment of detection of the reaction of NI to this change.

EFFECT: increased accuracy of determining the range to the NI using RS, which is part of the control of the ground-to-ground missile system, and for suppressing thereof interference is placed.

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