DEVICE FOR MEASURING SIGNAL PROTECTION FROM INTERFERENCE Russian patent published in 2015 - IPC H04B3/46 

FIELD: radio engineering, communication.

SUBSTANCE: in a device for measuring protection of a signal from interference, interaction of a signal and interference in the frequency-time domain is evaluated using a cross-correlation coefficient of the distorted signal and the reference signal g, and signal distortion, which is inevitable when taking measures to mitigate interference in a receiving channel, is evaluated using a cross-correlation coefficient of interference and the reference signal λ. The invention proposes to use the ratio of said coefficients, i.e. $$\Xi =\frac{g}{\lambda }$$ , as the composite indicator $$\Xi$$ of the degree of protection of the signal from interference (based on the effectiveness of measures taken to mitigate interference). The greater the effect of interference on the signal, the greater the value of the cross-correlation coefficient of interference and the reference signal λ, and, consequently, the lower the value of the composite indicator $$\Xi$$ of the degree of protection of the signal from interference. Interference mitigation in the spectrum of the signal leads to the reduction of both the denominator and the numerator of the expression for $$\Xi$$ , since the difference between the distorted signal and the reference signal increases.

EFFECT: high accuracy of measuring protection of a signal from interference.

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