Comprehensive design method of array antenna radiation and scattering performance based on installation height

Abstract

The invention discloses an integrated design method of array antenna radiation and scattering performances based on an installation height. The method comprises the following steps: determining structural parameters and electromagnetic working parameters of a planar array antenna; determining a rectangular grid circular aperture array configuration; calculating a cell radiation pattern function and a cell scattering pattern function; giving an initial installation height value; calculating the installation height in the direction z; calculating a radiation pattern function and a gain pattern function under the installation height in the direction z, as well as a gain loss amount relative to the ideal situation; calculating a scattering pattern function and an RCS (Radar Cross-Section) pattern function under the installation height in the direction z, as well as an RCS reduction amount relative to the ideal situation; judging whether the radiation and the scattering performances meet that the RCS reduction amount is the maximum when the gain loss amount is the minimum or not under the installation height in the direction z, if not, updating the installation height in the direction z and repeatedly calculating until the demand is met.

Description

technical field [0001] The invention belongs to the technical field of radar antennas, and specifically relates to a comprehensive design method for array antenna radiation and scattering performance, as well as the structural design of the antenna and the determination and distribution scheme of the installation height of the antenna unit, which can guide the array antenna from the perspective of comprehensively considering the radiation and scattering performance Design of structural schemes. Background technique [0002] From television, radio, mobile communications, to radar, navigation, weather, positioning, satellites, to guided weapons in the military field, electronic countermeasures and other application fields, antennas have achieved extremely fruitful research results. At the same time, military struggle urgently needs the development of powerful antenna theory and technology. Array antenna has been widely used in various radar systems and has become the mainstre...

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Problems solved by technology

However, these two methods are only from the perspective of traditional array antenna synthesis, and the antenna radiation and scattering performance is optimized by adjusting the spacing of the radiating elements. The optimization results only reduce the scattering peak of the array antenna RCS pattern, while the RCS The main lobe of the

In addition, the irregular spacing of radiation elements obtained by the above method brings great difficulties to the specific implementation process of array structure design, heat dissipation design, and process processing.

At the same time, the above method uses the electric field integral equation and the RWG basis function moment method proposed in Rao S, Wilton D, Glisson A.Electromagnetic scattering by surfaces of arbitrary shape.IEEETransactions on Antennas and Propagation,VOL.30,NO.3,1982 To analyze the radiation field and scattering field of the array antenna, not only the calculation process is complicated, but also it is difficult to find an effective solution

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