Pattern Synthesis Method for Conformal Antenna Array Based on Weed Algorithm

Abstract

The invention relates to a conformal antenna array directional diagram comprehensive method based on an invasive weed optimization. The conformal antenna array directional diagram comprehensive method is characterized by at least comprising the following steps of: a step 101 of carrying out population initialization; a step 102 of carrying out growth and reproduction; a step 103 of carrying out spatial diffusion; a step 104 of carrying out competition and repulsion; a step 105 of determining if the seed number reaches the maximum number of population; a step 106 of selecting solutions, the number of which is Qsize, with best adaptive values in dependence on a competitive survival rule; a step 107 of determining if a present number of iterations reaches the largest number of iterations, and proceeding with the step 102 if the present number of iterations does not reach the largest number of iterations, i.e., iter<iter[max], and otherwise carrying out a step 108 of quitting an algorithm implementation process and outputting an optimal solution. In the conformal antenna array directional diagram comprehensive algorithm, the adaptability is set as a standard reproduction mechanism, and an offspring-and-parent competition and repulsion mechanism is employed, the conformal antenna array directional diagram comprehensive algorithm is global and effective, the algorithm is prevented from falling into a local optimal solution, and useful information is reserved to capacity.

Description

technical field [0001] The invention belongs to the field of array antennas, and relates to a bionic algorithm, in particular to a conformal antenna array pattern synthesis method based on a weed algorithm. Background technique [0002] With the rapid development of radar systems, array antennas, as the core of their electromagnetic wave transceiver devices, have attracted much attention. How to achieve the desired antenna array direction by synthesizing the amplitude and phase excitations of the antenna elements Figure 1 has been a hot topic of research. Due to the complexity of the antenna system application requirements and the environment, the traditional antenna synthesis technology is often weak, so the pattern synthesis technology using various optimization algorithms based on bionic technology has been greatly developed. Bionic algorithms have unique advantages for the optimization of multi-parameter, non-differentiable, and even discontinuous objective functions. ...

AI Technical Summary

Problems solved by technology

Since the conformal array carrier is usually a non-planar structure, the radiation directionality of the array elements is quite different, which makes the amplitude and phase design of the radiation element of the conformal array more complicated; moreover, compared with the planar array and the simple conformal array, the complex conformal array The problem of high sidelobe level faced by the conformal array is particularly prominent, so the research on low sidelobe technology has become the core issue in the design of conformal antenna arrays

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