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A Synthetic Cascade Optimization Method for Large Planar Array Antenna Patterns

A planar array antenna, pattern synthesis technology, applied in directions such as antennas, antenna arrays, electrical components, etc., can solve the problem of not reaching the global optimum, and achieve the effects of accelerating convergence speed, good versatility, and high computational efficiency

Active Publication Date: 2017-07-14
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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Problems solved by technology

However, this method often converges early, and cannot continue to optimize after a certain number of iterations, resulting in failure to reach the global optimum.

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  • A Synthetic Cascade Optimization Method for Large Planar Array Antenna Patterns
  • A Synthetic Cascade Optimization Method for Large Planar Array Antenna Patterns
  • A Synthetic Cascade Optimization Method for Large Planar Array Antenna Patterns

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Taking the synthesis of the sector pattern of an apertured waveguide planar array antenna as an example, the synthesis steps of the array pattern are described in detail:

[0032] Step 1: Data preparation: Obtain the array unit pattern data P in the integrated array 0 ,Such as figure 1 shown. Array size in this example: M=40 rows, N=60 columns, row spacing d y =0.56λ 0 , column spacing d x =0.54λ 0 ,λ 0 is the working wavelength of the antenna. Cells are arranged in a rectangular grid. target pattern F g The main lobe is a fan-shaped pattern, the azimuth plane is 2°, the elevation plane is 20°, the side lobe is -15dB, and the ripple fluctuation in the main lobe area is 1dB. In this example, take the array pattern to calculate the number of ...

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Abstract

The invention discloses a comprehensive cascading optimization method for the pattern of a large-scale planar array antenna, which adopts a hybrid optimization algorithm combining the Iterative Fourier Transform (IFT) method and a variety of intelligent optimization algorithms to comprehensively design the pattern of the planar array antenna , and the influence of mutual coupling factors between antenna elements is considered in the comprehensive design. The present invention has the advantages of high calculation speed, high calculation accuracy and good versatility for the comprehensive design problem of planar array, especially large-scale (unit number greater than 1000) planar array antenna.

Description

technical field [0001] The invention belongs to the technical field of radar antennas, and relates to a comprehensive cascading optimization method for a large-scale planar array antenna pattern. Background technique [0002] The invention is used for forming the pattern of the planar array antenna, and has the advantage of high efficiency especially for the large-scale planar array. The planar array antenna synthesis method is constantly developing along with the development of radar technology. At present, the array antenna pattern synthesis based on the full array unit weighting at home and abroad can be divided into the following methods: analytical method; traditional mathematical optimization method; artificial intelligence type algorithm; iterative Fourier algorithm (IFT). [0003] The analytical method refers to the comprehensive calculation of the antenna pattern directly by using the analytical formula. This method can quickly calculate the excitation distribution...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/00
Inventor 丛友记简玲黄彩华陈文俊
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND