Multi-beam laser phased array radar laser emission system

Abstract

The invention discloses a multi-beam laser phased array radar laser emission system, and relates to the technical field of laser phased array detection. In order to overcome the problems that the emergent energy of a system is limited by an optical fiber and long-distance target detection is difficult to realize, the invention provides a multi-beam laser phased array radar laser emission system, which comprises a laser beam splitting module and a laser collimation module, and is characterized in that the laser beam splitting module comprises an optical fiber laser, a beam splitter, a phase modulator and an optical phased array; the optical phased array is controlled by the polarization controller, the optical fiber laser emits a laser light source, the laser light source enters a plurality of optical fiber channels through the beam splitter, the phase modulator synchronously modulates the phases of light beams in the optical fiber channels, the light beams reach the optical phased array at the same time, the polarization controller drives the optical phased array, and the driving voltage is adjusted through the polarization controller. And an emergent light beam is adjusted by the F-Theta laser collimating lens group. According to the invention, the incident beam energy of the optical phased array is improved, and multi-target detection and tracking in a view field coverage area are realized.

Description

technical field [0001] The invention relates to the technical field of laser phased array detection, in particular to a multi-beam laser phased array radar laser emission system. Background technique [0002] As a new type of laser active imaging technology, laser phased array radar realizes the phase control of the beam through the phased array, deflects the beam, and then realizes the scanning of the target area, and gathers the light of the target area to the surface through the optical system. It has the characteristics of large scanning field of view, long detection distance, high imaging resolution, and strong three-dimensional imaging capability. It plays an important role in battlefield early warning, information acquisition, target monitoring and investigation. Applications. The traditional laser phased array radar system emits a beam of laser light through the beam expansion and collimation optical path, and the beam with a larger beam diameter directly irradiates...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a multi-beam laser phased array radar laser emission system, which needs to overcome the limitation of optical fiber on the output energy of the system in the prior art, and at the same time overcome the serious divergence of the output beams passing through the optical phased array at different angles, and it is difficult to achieve long-distance target detection problem

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