PROCEDURE DETERMINING LINE OF POSITION OF RADIO RADIATION SOURCE Russian patent published in 2003 - IPC

FIELD: radio engineering, passive direction finding systems determining lines of position of radio radiation sources and mounted on mobile platforms. SUBSTANCE: in correspondence with procedure determining line of position of radio radiation source monopulse direction finder of phase type moves along axis X of plane XY with constant speed V. Signals of radio radiation source are received by two antennas A₁ and A₂, spaced apart which axes are constantly directed along axis Y. Signals S₁(t) and S₂(t) received by antennas A₁ and A₂ are limited, complex coefficient of correlation F(t) between received signals is measured, time moment t₀, is determined by data F(t), p-th harmonics Sp1

(t) and Sp2(t) are extracted from limited signals S₁(t) and S₂(t) correspondingly, instantaneous frequency Ω(t) of complex correlation coefficient F(t) is measured as well as time moment. Complex correlation coefficient F(t) is measured for signals Sp1(t) and Sp2(t) and time moment t₀ is measured when instantaneous frequency Ω(t) reaches its maximum value. EFFECT: elimination of ambiguity in determination of line of position of radio radiation source. 4 dwg