DEVICE OF DOPPLER VELOCITY METER BASED ON INTERFEROMETER WITH FIBRE RADIATION INPUT Russian patent published in 2024 - IPC G01P3/36 

FIELD: speed recording.

SUBSTANCE: Doppler velocity meter device based on an interferometer with fibre input of radiation includes a measuring module with laser radiation sources forming pairs of reference and probing signal sources to form at least sixteen measuring channels in which the sources differ from each other and in the pair from each other in frequency and which also include optical transmit-receive sensors, optical-to-electrical signal converters, amplifiers, fibre delay lines, high-speed fibre switches, circulators, adders, multiplexers, dividers and recording equipment, while serving as sources probing and reference radiation use separate sources of laser radiation, while the sources of probing radiation are connected through dividers to a block of circulators and then through adders with four amplifiers, the output of one of which is connected through an optical shutter to the input of a high-speed fibre switch, and to it through a fibre line delay is connected to the output of another amplifier, the output of the third amplifier is connected through a delay fibre line of greater length and another optical gate to the input of another high-speed fibre switch, to which the output of the fourth amplifier is also connected through an even longer delay fibre line, and the outputs of the high-speed fibre switches are connected to the inputs an additional high-speed fibre switch, which is connected to an optical multiplexer, to which reference radiation sources are also connected through other adders.

EFFECT: improving the quality and accuracy of the data obtained when recording the speed of a moving object.

1 cl, 1 dwg