Method for quickly determining cylindrical conformal array antenna structure tolerance based on electro-mechanical coupling
A conformal array, electromechanical coupling technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of circumferential position error, difficulty in quickly determining and assigning antenna structure, tolerances, etc.
Active Publication Date: 2016-06-29
XIDIAN UNIV
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[0007] Based on the above problems, the present invention provides a method for quickly determining the structural tolerance of cylindrical conformal array antennas based on electromechanical coupling, so as to effectively solve the problem that it is difficult to quickly determine and allocate antenna structural tol
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[0106] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0107] refer to figure 1 , the present invention is a method for quickly determining the structural tolerance of a cylindrical conformal array antenna based on electromechanical coupling, and the specific steps are as follows:
[0108] Step 1, determine the structural parameters and electromagnetic working parameters of the cylindrical conformal array antenna.
[0109] 1.1 Determine the cylinder radius r of the cylindrical conformal array antenna, the number of circumferential rows M of array elements in the array, the number of axial columns N, the central angle γ of adjacent array elements in the circumferential direction, and the axial spacing d z (See figure 2 ), and the structural parameters and operating frequency f of the array element;
[0110] 1.2 Number the array elements in the array according to the order of circumferential rows and axia...
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The invention discloses a method for quickly determining cylindrical conformal array antenna structure tolerance based on electro-mechanical coupling. The method comprises the following steps: determining structure parameters and electromagnetic working parameters of a cylindrical conformal array antenna; respectively giving circumferential position tolerance and axial position tolerance of an initial array element, and determining a circumferential position error random quantity and an axial position error random quantity of all array elements in an array plane; calculating new positions of the array element when an error exists; establishing an array element rectangular coordinate system and an array element spherical coordinate system, and calculating array element directional diagrams under the array element rectangular coordinate system and an array rectangular coordinate system; determining an array element excitation amplitude and a phase according to apertural face weighting distribution; calculating a spatial phase difference of each array element at a target; calculating antenna electrical performance parameters by utilizing a cylindrical conformal array antenna electro-mechanical coupling model when the error exists; judging whether the antenna electrical performance under the structure tolerance condition meets a requirement. According to the method, the problems about quickly determining a cylindrical conformal array antenna structure scheme and distributing the antenna structure tolerance are effectively solved; the method can be used for guiding the evaluation of an antenna structure scheme.
Description
technical field [0001] The invention belongs to the technical field of radar antennas, and in particular relates to a method for quickly determining structural tolerances of cylindrical conformal array antennas based on electromechanical coupling, which can be used to guide the rapid determination of structural tolerances of cylindrical conformal array antennas and the evaluation of structural schemes. Background technique [0002] The conformal array antenna is an antenna that is consistent with the shape of the object. It has the advantages of saving the structural space of the carrier, not affecting the aerodynamic performance of the carrier, and reducing the scattering cross-sectional area of the radar. It has been widely used in the aerospace field. Among them, the cylindrical conformal array antenna is the most common form of conformal antenna, which has been widely used in various radar systems. [0003] With the development of military technology in the world, the ...
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CPCG06F30/17
Inventor 王从思薛敏康明魁王艳李鹏李娜杜敬利黄进毛静王志海王璐邱颖霞
Owner XIDIAN UNIV
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