An umbrella antenna random error analysis methodconsidering deterministic error

An umbrella antenna, random error technology, applied in the field of umbrella antenna random error analysis

Active Publication Date: 2019-03-01
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it did not carry out relevant research on the influence of random errors on the electrical performance of umbrella antennas

Method used

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  • An umbrella antenna random error analysis methodconsidering deterministic error
  • An umbrella antenna random error analysis methodconsidering deterministic error
  • An umbrella antenna random error analysis methodconsidering deterministic error

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A method for analyzing random errors of an umbrella antenna considering deterministic errors, comprising the steps of:

[0065] Step 1, input the geometric parameters and electrical parameters of the umbrella antenna

[0066] Input the geometric parameters and electrical parameters of the umbrella antenna provided by the user; the geometric parameters include aperture, focal length, offset distance and number of ribs; the electrical parameters include operating wavelength, free space wave constant, feed parameters, feed primary pattern, and Electrical performance requirements including antenna gain, lobe width, sidelobe level, and pointing accuracy;

[0067] Step 2, calculate the optimal focal length of the umbrella antenna

[0068] According to the geometric parameters of the antenna provided by the user, the optimal focal length of the umbrella antenna is calculated according to the following formula:

[0069]

[0070] Among them, f s Indicates the optimal focal...

Embodiment 2

[0097] Such as figure 1 As shown, the present invention provides a method for analyzing the random error of an umbrella antenna considering a deterministic error, comprising the following steps:

[0098] Step 1, input the geometric parameters and electrical parameters of the umbrella antenna

[0099] Input the geometric parameters and electrical parameters of the umbrella antenna provided by the user; the geometric parameters include aperture, focal length, offset distance and number of ribs; the electrical parameters include operating wavelength, free space wave constant, feed parameters, feed primary pattern, and Electrical performance requirements including antenna gain, lobe width, sidelobe level, and pointing accuracy;

[0100] Step 2, calculate the optimal focal length of the umbrella antenna

[0101] According to the geometric parameters of the antenna provided by the user, the optimal focal length of the umbrella antenna is calculated according to the following formu...

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Abstract

The invention discloses an umbrella antenna random error analysis method considering deterministic error, which comprises the following steps: inputting umbrella antenna geometrical parameter and electric parameter; calculating the optimal focal length of the umbrella antenna; Calculation of Far Area Radiation Electric Field of Ideal Antenna at Optimal Focal Length; Reflector triangular mesh generation; calculating the deterministic error of the umbrella antenna; the first-order and second-order coefficients of the electric field displacement relative to the center point of the element are calculated. The first-order and second-order coefficients of the random error of the electric field relative to the center point of the element are calculated. Calculation of Far Area Radiated Electric Field under Deterministic Error of Umbrella Antenna; RMS value of input surface random error; calculating an average value of the far-field radiation power of the antenna; Judge whether the electricalperformance meets the requirements; Output radiated power pattern; Update the surface random error rms value. By obtaining the influence of the surface random error of the umbrella antenna on the electric performance, the invention can guide the processing and manufacturing of the umbrella antenna components.

Description

technical field [0001] The invention belongs to the technical field of radar antennas, and in particular relates to a method for analyzing random errors of umbrella antennas in consideration of deterministic errors in the field of radar antennas. Background technique [0002] Due to the advantages of simple structure, light weight and low cost, the umbrella antenna is widely used in the field of satellite deployable antenna design. During the manufacturing process of the umbrella antenna components, random errors are inevitably introduced, which leads to the deterioration of its electrical performance; with the increase of the frequency band of the umbrella antenna application, the impact of random errors on the electrical performance of the umbrella antenna is becoming more and more serious. It is a research topic in umbrella antenna design to carry out relevant research on the influence of random errors on the surface of umbrella antennas on its electrical performance, so ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 张树新张顺吉段宝岩代季鹏
Owner XIDIAN UNIV
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