Method for determining structure tolerance of sparsely-configured antenna array based on radiation field and scattering field

Abstract

The invention discloses a method for determining a structure tolerance of a sparsely-configured antenna array based on a radiation field and a scattering field. The method comprises the steps that a structure, electromagnetic working parameters and a sparsely-configured matrix of the sparsely-configured antenna array are determined, and an initial structure tolerance is provided; the structure tolerance is allocated as the position installation precision of array elements in the plane where a sparse array surface is located and the planeness of a normal array surface of the sparse array surface where the array elements are located; a random number of array element position installation errors and a random number of array surface planeness errors are acquired; a radiation field space phase difference of every two adjacent radiation units in the sparse array at a target is calculated to obtain an antenna radiation field oral surface phase difference; an antenna radiation field direction diagram is calculated; the deterioration degree of a phase antenna gain relative to design indexes is calculated; whether the design requirements are met or not is judged; an antenna scattering field oral surface phase difference and a scattering field direction diagram are calculated, and electrical property parameters of the scattering field are calculated; whether the design requirements are met or not is judged. According to the method, the processing and mounting difficulty can be reduced, the development cost can be reduced, and the development cycle can be shortened.

Description

technical field [0001] The invention belongs to the field of radar antennas, and in particular relates to the determination and distribution of sparsely arranged array antenna structure design and manufacturing tolerances, which can be used to guide the rapid determination of sparsely arranged array antenna structure tolerances. Background technique [0002] Antennas are widely used in radio systems such as communications, broadcasting, television, radar, and navigation. They play the role of spreading radio waves and are an indispensable device for effectively radiating and receiving radio waves. With the development of science and technology, ordinary antennas are no longer enough to meet the needs, especially for guided weapons and electronic countermeasures in the military field, which put forward strict requirements for radar antennas. Array antenna has been widely used in various radar systems and has become the mainstream of radar development due to its advantages of ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a radiation and scattering-oriented method for determining the structure error of sparsely arranged array antennas, so as to effectively solve the problem that it is difficult to quickly determine and allocate antenna structure tolerances in the design of sparsely arranged array antenna structures, and can guide sparse Arranging array antenna element position installation accuracy and formulation and allocation of array flatness, and evaluation of antenna structure scheme

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