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Interval analysis method of electrical performance of reflector antenna under panel random and system error

A technique of systematic error and interval analysis, applied in electrical digital data processing, special data processing applications, instruments, etc.

Active Publication Date: 2016-10-26
XIDIAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for interval analysis of the electrical performance of reflector antennas under random and systematic errors of the panel, so as to solve the problem of infinite load analysis

Method used

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  • Interval analysis method of electrical performance of reflector antenna under panel random and system error
  • Interval analysis method of electrical performance of reflector antenna under panel random and system error
  • Interval analysis method of electrical performance of reflector antenna under panel random and system error

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example

[0078] The reflector antenna used in the example has a diameter of 26m, a focal length of 7.8m, and a working frequency of 5.7GHz. For the composition of the panels on it see figure 2 , a single panel is approximately fan-shaped, which can be described by polar coordinates, r1, r2 represent the upper and lower limits of the radius of the fan-shaped panel, respectively, Indicates the upper and lower limits of the polar angle. The reflective surface is discretized into 21919 triangular units. The aperture field is in equiphase distribution, and the amplitude distribution function is:

[0079] f ( ρ ′ ) = { 0.37 + 0.25 t g ( ρ ′ ...

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Abstract

This invention relates to an interval analysis method of electrical performance of a reflector antenna under panel random and system error. The method comprises the following steps: step 1, according to the reflector antenna theory, a deformed far field of the reflector antenna can be described as shown in the description; step 2, disperse an integral domain into N triangle units; step 3, introduce interval parameters of the system error and the random error as shown in the description; step 4, calculate discrepant intervals; step 5, calculate electric field value interval of single discrete unit at certain point of the far field; step 6, calculate a phase angle interval of the electric field value of a complex variable function; step 7, calculate electric field value intervals of all units at certain point of the far field; step 8, calculate the interval of a directional diagram of the average power of the far field; research the influence of the structural distortion to the electrical performance by utilizing the interval analysis; and analyze the intervals getting the electrical performance change through the structural distortion or error intervals. This method theoretically solves the problem of infinite load analysis of the working condition.

Description

technical field [0001] The invention relates to an analysis method for the electrical performance of an antenna, in particular to an interval analysis method for the electrical performance of a reflector antenna under random and systematic errors of the panel. technical background [0002] Although the machining technology continues to improve, due to the increase in the diameter of the reflector antenna and the increase in the working frequency band, the accuracy requirements for panel processing and installation are also increasing. Therefore, it is still the field of reflector antenna design to study the influence of panel deformation or error on the electrical performance of the antenna. research hotspots. The structural errors of the antenna include random errors and system variable errors. The former is mainly processing and installation errors, and the latter is mainly structural changes caused by various external loads. Ruze studied the gain loss caused by random pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 李鹏李娜王从思黄进许万业王伟宋立伟周金柱
Owner XIDIAN UNIV