Rapid array antenna pattern synthesis method based on new optimization problem

A technology for pattern synthesis and optimization problems, applied in the field of array antennas, can solve problems such as slow calculation speed, many design variables, and poor comprehensive effects, and achieve the effects of reduced dimensions, fast calculation speed, and low computational complexity

Pending Publication Date: 2022-02-18
CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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Problems solved by technology

[0006] (1) There are many design variables;
[0007] (2) Calculation speed is slow;
[0008] (3) The comprehensive effect is not good

Method used

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  • Rapid array antenna pattern synthesis method based on new optimization problem
  • Rapid array antenna pattern synthesis method based on new optimization problem
  • Rapid array antenna pattern synthesis method based on new optimization problem

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Embodiment Construction

[0040] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] Embodiments of the present invention provide a fast array antenna pattern synthesis method based on a new optimization problem.

[0042] In existing array antenna pattern synthesis techniques, the increase in the dimension of design variables often slows down the computational speed of the pattern synthesis problem. To solve this problem, firstly, a new optimization problem is constructed by introducing the phase of the desired radiation field as a design variable. Given the phase, the excitation can be determined by solving a linear least squares problem. When the shaped region is narrow, the dimensionality of the design variables is significantly reduced. With the phase as a design variable, the array pattern...

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Abstract

The invention provides a rapid array antenna pattern synthesis method based on a new optimization problem, relates to the field of array antennae, and constructs a new optimization problem of an array antenna pattern by introducing a phase of an expected radiation field as a design variable; the design variable is initialized; L-BFGS-B is used to find a local optimal solution for the new optimization problem; and whether the optimal solution meets a termination condition is judged, if so, a local optimal phase is output to obtain a corresponding array antenna pattern, and if not, iteration is continued until a satisfactory array antenna pattern is obtained. The method has the beneficial effects that the design variable dimension in the array antenna is greatly reduced, the calculation complexity is reduced, and the calculation speed of the comprehensive problem of the array antenna directional diagram is improved.

Description

technical field [0001] The invention relates to the field of array antennas, in particular to a fast array antenna pattern synthesis method based on a new optimization problem. Background technique [0002] Compared with traditional antennas, array antennas can effectively improve the communication distance, signal quality, coverage area, connectivity and spectrum efficiency of communication systems, and are playing an increasingly important role in modern wireless communication systems. By adjusting the number, position and excitation of the elements in the antenna array, the desired radiation pattern can be obtained. Array pattern synthesis is a nonlinear optimization problem, and many excellent pattern synthesis techniques have been proposed, such as analytical methods and artificial intelligence methods. [0003] All kinds of classic synthesis methods have high computational efficiency, such as Woodward Lawson method, convex optimization method, matrix beam method and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F111/06
CPCG06F30/20G06F2111/06
Inventor 曾三友杨秀晴江荣
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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