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Rapid design method for low-sidelobe optical phased array

An optical phased array and design method technology, applied in design optimization/simulation, calculation, calculation model, etc., to achieve good optimization effect and optimal design effect

Pending Publication Date: 2021-12-28
SPACE STAR TECH CO LTD
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Problems solved by technology

[0007] The technical problem solved by the present invention is: in the current prior art, there are relatively few traditional studies on the low sidelobe of optical phased arrays, and the problem that optical phased arrays generally have high sidelobe levels and meet practical commercial applications , a fast design method for low-sidelobe optical phased arrays is proposed

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  • Rapid design method for low-sidelobe optical phased array
  • Rapid design method for low-sidelobe optical phased array
  • Rapid design method for low-sidelobe optical phased array

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Embodiment Construction

[0047] A rapid design method for low-sidelobe optical phased arrays, which can quickly realize the optimal design of low-sidelobe wide-angle scanning optical phased arrays, and can optimize array element spacing and excitation in two steps based on the particle swarm-convex optimization hybrid algorithm Distributed realization of the low-sidelobe wide-angle scanning design of the optical phased array has the advantages of good optimization effect and fast optimization design, and can be widely used in the field of low-sidelobe wide-angle scanning optical phased array in laser communication, laser radar and other systems. The specific steps of the design method are as follows:

[0048] (1) Establish an antenna array model, which includes N array elements, and obtain the far-field pattern expression of the optical phased array;

[0049] Among them, the expression of the far-field pattern of the optical phased array is specifically:

[0050]

[0051]

[0052] In the formul...

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Abstract

A rapid design method for a low-sidelobe optical phased array is characterized in that low-sidelobe wide-angle scanning design of the optical phased array is realized through two-step staged optimization of array element spacing and excitation distribution based on a particle swarm-convex optimization hybrid algorithm, excitation distribution under different scanning angles can be obtained through rapid optimization, and the low-sidelobe wide-angle scanning optical phased array is obtained through design. The method can be widely applied to laser communication and laser radar systems, the optimization effect is good, and the optimization speed is high.

Description

technical field [0001] The invention relates to a fast design method for a low-sidelobe optical phased array, and belongs to the technical field of optimal design methods for optical antenna arrays. Background technique [0002] The optical phased array is an array that works in the optical frequency band and realizes beam scanning by controlling the phase of light entering each optical antenna unit. In recent years, with the advancement of design methods and technology levels, optical phased arrays are becoming a hotspot of research. Compared with the traditional beam mechanical scanning mode, the optical phased array has the following advantages: (1) The scanning speed is fast. Compared with the existing mechanical servo scanning, the fully electronically controlled beam scanning has the advantage of fast scanning speed. (2) Small size and light weight. Optical phased array can highly integrate core components such as laser light source, power distribution network, phas...

Claims

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Application Information

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IPC IPC(8): G06F30/25G06N3/00G06F111/04G06F111/08
CPCG06F30/25G06N3/006G06F2111/04G06F2111/08
Inventor 董涛贺敬文何新宇徐月
Owner SPACE STAR TECH CO LTD
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