METHOD OF DETERMINING RANGE OF A TARGET IN A TWO-WAY PASSIVE LOCATION SYSTEM USING PROBING SIGNALS OF AN IONOSPHERIC OVER-THE-HORIZON RS Russian patent published in 2020 - IPC G01S7/42 G01S13/02 G01S13/46 

FIELD: radar ranging.

SUBSTANCE: invention relates to radar ranging and can be used in a two-pass passive location system for determining range of aerial and surface targets, which are irradiated with probing signals of an ionospheric over-the-horizon radar station. Said result is achieved due to measurement in first receiving position of PP1 of azimuth of target β₁, and in both receiving positions of differences of paths of propagation through ionosphere and surface electromagnetic wave of signals reflected from target ΔS₀₁ and ΔS₀₂, moments of receiving probing signals , calculation of distance difference to target where c is the speed of light, and use of said difference to calculate target range in PP1 by formula:

EFFECT: technical result is high accuracy of determining range of target due to consideration of ionosphere effect on propagation of radar signals.

1 cl, 2 dwg, 2 tbl