METHOD OF MEASURING CHANGE IN COURSE ANGLE OF PROBING SIGNAL SOURCE Russian patent published in 2014 - IPC G01S3/80 

FIELD: physics.

SUBSTANCE: method of measuring change in the course angle of a probing signal source involves successively receiving probing signals of a moving source; spectral analysis of the first, second and n-th received signals; in each of said received signals, determining the detection threshold, change in amplitude of spectral readings exceeding the threshold; determining and storing values of spectral readings F₁, F₂ and F_n, having maximum amplitude; calculating the difference between values of spectral readings F₂-F₁ and F_n-F₁; and the value of change in the course angle of the probing signal source $$Q_n^0$$ is defined as $$ar\cos Q_n^0,$$ where $$Cos{Q}_n^0=\left(Fn-F_1\right)/\left(F_2-F_1\right)<\mathrm{1,}$$ if the angle between the receiver and the source of probing signals increases, or $$Cos{Q}_n^0=\left(F_2-F_1\right)/\left(Fn-F_1\right)<\mathrm{1,}$$ if the angle between the receiver and source of probing signals decreases; and if (F_n-F₁)(F₂-F₁)=1, the course angle has not changed or has changed slightly.

EFFECT: determining motion elements of a probing signal source for multiple received transmissions.

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