Integrated cascading optimization method for large-scale planar array antenna pattern

A planar array antenna and pattern synthesis technology, applied to antennas, antenna arrays, electrical components, etc., can solve the problems of not reaching the global optimum, and achieve the effects of accelerating convergence speed, improving computational efficiency, and high computational efficiency

Active Publication Date: 2015-10-21
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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However, this method often converges early, and cannot continue to optimize af...

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  • Integrated cascading optimization method for large-scale planar array antenna pattern
  • Integrated cascading optimization method for large-scale planar array antenna pattern
  • Integrated cascading optimization method for large-scale planar array antenna pattern

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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 an integrated cascading optimization method for a large-scale planar array antenna pattern, and the method employs a mixed optimization algorithm, which integrates an IFT (iterative Fourier transform) method with a plurality of intelligent optimization algorithms, for the comprehensive design of the planar array antenna pattern. Moreover, the method gives the consideration to impact from mutual coupling factors among antenna units. Aiming at the comprehensive design of a planar array, especially a large-scale planar array antenna (the number of units is greater than 100), the method is high in calculation speed, is high in calculation precision, and is good in universality.

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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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
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