SIGNAL RECEIVING METHOD Russian patent published in 2021 - IPC G01S17/00 

FIELD: signal reception.

SUBSTANCE: invention relates to signal reception, in particular to the technique of separating signals from noise using avalanche photodiodes, and can be used in any field where maximum signal-to-noise ratio is required. A method for receiving signals, including the reception, amplification and formation of standard pulses when the amplified signal exceeds a predetermined response threshold, in the process of preparing for receiving signals, the root-mean-square value of the noise is determined, for which the first initial response threshold U₁is set, and then the second initial threshold U₂, the absolute difference of the squares of the initial thresholds is determined, as well as the frequencies f₁ and f₂ of exceeding these thresholds by noise emissions and the absolute difference of these frequencies, after which the estimate of the root-mean-square noise value σ* is determined by the formula wherein the frequencies f₁ and f₂ are determined by accumulating the number N₁ and N₂ of the corresponding exceedances of the thresholds by noise emissions and determining the f₁ and f₂ according to the formulas f₁=N₁/T₁, f₂=N₂/T₂, where T₁ and Т₂ are the periods of accumulation of the excess N₁ and N₂.

EFFECT: invention ensures high threshold sensitivity in all operating conditions.

5 cl, 3 dwg, 4 tbl