A Rapid Method for Determining Structural Tolerances of Active Phased Array Antennas Oriented to Radiation and Scattering
A phased array antenna, a technology for determining a method, applied in radio wave measurement systems, special data processing applications, instruments, etc., can solve problems such as the degradation of scattered field scattering performance
Active Publication Date: 2017-02-15
XIDIAN UNIV
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Problems solved by technology
However, the change of the element position of the active phased array antenna will reduce the scattering performance of the active phased array antenna. improved
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[0055] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0056] refer to figure 1 , the present invention is a method for quickly determining the structural tolerance of an active phased array antenna oriented to radiation and scattering, and the specific steps are as follows:
[0057] Step 1, determine the structural parameters, electromagnetic parameters and structural tolerances of the active phased array antenna.
[0058] 1.1. Obtain the structural parameters of the active phased array antenna, including the antenna aperture (in the array, that is, the length L in the x and y directions x , L y ), the number of rows M of antenna elements, the number of columns N, and the distance d of antenna elements in the array, that is, in the x and y directions x 、d y ,like figure 2 shown;
[0059] 1.2. Obtain the electromagnetic working parameters of the active phased array antenna, including the operating fr...
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The invention discloses a radiation-and-scattering-oriented quick determination method for an active phased-array antenna structure tolerance. The method comprises the steps as follows: firstly, an antenna structure parameter and an electromagnetic work parameter are determined for giving out a primary structure tolerance; secondly, the aerial radiation factor and scattering radiation factor are calculated; thirdly, the structure tolerance is distributed as the mounting position error and mounting height error of an antenna unit in an array plane; fourthly, the radiation field space phase difference and the scattering field space phase difference of two adjacent antenna units in the array plane at an observation point are calculated so as to obtain the phase errors of a radiation field aperture and a scattering field aperture; fifthly, the pattern functions of the radiation field and the scattering field are calculated so as to draw a radiation field pattern and a scattering field pattern; sixthly, the variation values relative to index radiation field property and scattering field property are calculated; finally, whether the antenna structure meets the design requirement or not is determined. According to the method, a reasonable structure tolerance precision is given quickly, the processing and mounting difficulties are lowered, the development cost is reduced, and the development period is shortened.
Description
technical field [0001] The invention belongs to the technical field of radar antennas, and specifically relates to a method for determining and distributing structural design and manufacturing tolerances of active phased array antennas, which can guide the rapid calculation of structural tolerances of active phased array antennas from the perspective of comprehensively considering the performance of radiation fields and scattering fields Identification and evaluation of structural options. Background technique [0002] The urgent need of military struggle produced radar, and strongly pulled the development of radar theory and technology. In modern warfare, especially the current needs of electronic warfare and information warfare, active phased array antennas have a wide range of advantages due to their rapid change of antenna beam pointing and beam shape, multiple functions, strong mobility, high reliability, and high detection and tracking capabilities. It is widely used ...
Claims
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IPC IPC(8): G06F17/30
CPCG01S7/4004
Inventor 王从思王伟锋余涛康明魁段宝岩黄进王伟周金柱李娜
Owner XIDIAN UNIV