Method for designing special-shaped curved surface conformal array antenna of vehicle-carrying platform

Abstract

The invention discloses a method for designing a special-shaped curved surface conformal array antenna of a vehicle-carrying platform, and aims to provide an antenna design method capable of remarkably reducing the array height and realizing full-airspace measurement and control communication under a vehicle-mounted platform. The method is implemented by the following steps of: establishing an xyzthree-dimensional rectangular coordinate system according to a parabolic, spherical and cylindrical surface special-shaped curved surface array flow pattern, dividing the special-shaped curved surface conformal array flow pattern into a paraboloid part, a partial spherical surface part and a cylindrical surface part, and connecting the lower part of a paraboloid with a cylindrical surface in an arc transition manner to obtain a special-shaped curved surface array flow pattern formed by parabolic, spherical and cylindrical surfaces; on the basis of the special-shaped curved surface array flowpattern, constructing an antenna subarray according to the rule of half-wavelength uniform arrangement of antenna units in the antenna sub-array, and establishing a special-shaped curved surface antenna array based on a curved surface sub-array level; and then taking curved surface subarrays as basic units, and arranging the antenna subarrays on the special-shaped curved surface conformal array according to an equal-area region center arrangement rule to obtain the special-shaped curved surface antenna array based on the curved surface subarray level.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a method for arranging a full-space special-shaped curved surface conformal array antenna applied to a vehicle-mounted platform with limited space. Background technique [0002] With the development of my country's aerospace industry, the number of aircraft in space, near space, and in the air is increasing, and multi-target measurement and control in the entire airspace has become a prominent problem in the field of aerospace measurement and control. Whether it is a ground-based multi-target TT&C system or a space-based TT&C network system, an efficient antenna system is a key subsystem to ensure effective TT&C management for multiple targets. A typical ground station needs one or more high-performance antenna systems, which can maintain continuous tracking, measurement and control of measurement and control targets in the entire airspace. The planar phased array can realize the...

AI Technical Summary

Problems solved by technology

The conformal array in the form of a spheroid has superior performance, and the fluctuation of the gain in all directions is the smallest, but its height is high, and it is easy to exceed the transportation height limit

The truncated spherical conformal array has the lowest height, but its performance is poor, and the gain in the zenith direction drops faster

The ellipsoidal conformal array has a balance in performance and height, but it still does not meet the design requirements

Therefore, there is currently no perfect and mature conformal array that can meet the engineering realization requirements under the vehicle platform.

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