DEVICE OF DOPPLER VELOCITY MEASUREMENT BASED ON INTERFEROMETER WITH FIBER INPUT OF RADIATION Russian patent published in 2023 - IPC G01P3/36 

FIELD: fast processes study.

SUBSTANCE: invention relates to the study of fast processes using the Doppler effect. The device includes a measuring module with sources of laser radiation that form reference and probing signals, an optical measuring channel, with optical sensors for receiving and transmitting radiation, passive optics elements, a fiber delay line and high-speed fiber switches equipped with control signal generators, reflected radiation amplifiers and recording equipment , including an oscilloscope with a photodetector, while measuring receivers are used as sensors, including two optical collimators, the mutual orientation of which is made in such a way that the probing radiation is transmitted through one of them, and the reflected signal is collected through the other, forming an active-passive registration system , while the sensors are tilted in opposite directions in such a way that the angle between their optical axes does not exceed 6°, and the distance between the centers of the probing spots of two sensors does not exceed the diameter of the probing spot of each of them. them.

EFFECT: improving the quality and accuracy of the data obtained, increasing the power of probing radiation.

1 cl, 4 dwg