DEVICE FOR DETECTING A POISSON SIGNAL IN POISSON NOISE Russian patent published in 2019 - IPC G01T1/16 

FIELD: physics.

SUBSTANCE: invention relates to detection of ionizing radiation sources and can be used for radiation monitoring of fissile materials during their unauthorized movement through checkpoints of enterprises and transport nodes, as well as during background radiation survey from board of moving vehicles of various types of location (ground, air, sea and space). Device comprises a first adder, a quantile device and a comparator unit, which make a traditional detection channel, in which the output of the adder is connected to the signal input of the comparison unit, and the outputs of the quantile device are connected to the threshold inputs of the comparator unit. Device further comprises a trend detection channel, made in form of a unit of arithmetic devices, consisting of a second adder, a logical key, a multiplication circuit, a subtraction circuit, a square-rooting circuit, a first division circuit, a second division circuit, wherein the first adder is connected to the second adder and the logical key, and the output of the second adder is connected to the logical key connected to the multiplying circuit and the subtract circuit, which are also interconnected, multiplication circuit is connected to the square-rooting circuit and the first division circuit, the input of the first division circuit is connected to the square-rooting circuit, and the output is connected to the second division circuit, the input of the second division circuit is connected to the subtraction circuit, and the output is connected to the threshold comparison unit detection by trend channel.

EFFECT: high probability of correct signal detection in noise in radiation monitoring scenarios associated with fast movement of fissile materials, wherein calculation of the proposed criterial function does not require preliminary knowledge of the intensity of the noise Poisson flow λ₀.

1 cl, 5 dwg