WAY OF DETERMINATION OF DISSEMINATING SPATIALLY DISTRIBUTED OBJECT SPEED AND DOPPLER LOW-COHERENT LIDAR FOR ITS REALISATION Russian patent published in 2009 - IPC G01S17/95 

FIELD: physics.

SUBSTANCE: in the inventions, the pulse wave generated by the laser, is divided by a beam splitter on two components, one of them, the probing wave, goes to the probed volume of atmosphere by means of the aerial while another is entered in KOP with the help of a focuser and is led out from it in the form of frequency-repeating (with the T_ring period) subsequent pulses, is passed through a fiber-optical splitter and arrives on an input terminal of the fibre-optical multiplexer. The specified frequency-response (with period T_ring) sequence of intrafiber impulses is transformed in a quasi-continuous (with slow exponential damping) intrafiber basic wave allocated with MTC property with the time of multiplexed temporal coherence τ_M=T_ring in the fiber-optical multiplexer. Further the basic wave arrives in a fiber-optical splitter from an exit of the fiber-optical multiplexer; the fiber-optical adder is passed through it and the AOM. In the adder the basic wave undergoes intrafiber mixture with a signal wave which arrives from the fiber-interfaced reception of the aerial, is interfaced to a reception part of a lidar fiber-optical path and through a fiber-optical splitter is entered in the fiber-optical multiplexer. In the fiber-optical multiplexer the intrafiber signal wave is exposed to a replicating, getting thus property MTC, and through a fiber-optical splitter arrives in the adder. In the course of replicating of a signal wave, its each fragment duration Δt1 will be transformed to a compound fragment by duration τ_M=T_ring and allocated with MTC properties.

EFFECT: increase in the functionality expressed in increase of sounding range of and simplification of the scheme, improvement of service characteristics and lidar price reduction.

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