Multi-beam laser phased array radar laser emission system

A laser emission system and phased array radar technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as difficult to achieve long-distance target detection, system emission energy limitation, and emission beam divergence, etc., to reduce optical energy loss, Optimize quality and overcome the effect of system output energy limitation

Pending Publication Date: 2022-04-12
XIAN TECHNOLOGICAL UNIV
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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, an

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  • Multi-beam laser phased array radar laser emission system
  • Multi-beam laser phased array radar laser emission system
  • Multi-beam laser phased array radar laser emission system

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[0016] The invention will be described in detail below with reference to the accompanying drawings and examples.

[0017] The present invention designs a multi-beam laser phase controlled array radar laser emission system. After the beam splitter is divided into multiple lasers, after modulation of phase modulator, synchronously into the transmissive optical phase control assembly, and electrically control achieves multi-beam multi-angle beam deflection; the laser beam for different incident angles, design based on F-THETA The laser collimation of the lens ensures the collimation of exiting light at different apertures, optimizing the quality of exit light.

[0018] See figure 1 A multi-beam laser phased array radar laser emission system, including a laser beam module and a laser collimation module. The laser beam module includes a fiber laser, a beam splitter, a phase modulator, and an optical phased array, the optical phased array being controlled by a polarization controller, a...

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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...

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Application Information

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IPC IPC(8): G01S7/481G01S7/484G01S7/4911
Inventor 王春阳卫旭阳刘雪莲谢达袁凯蒋世磊
Owner XIAN TECHNOLOGICAL UNIV
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