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Optimizing method for processing signal errors of different array antennas

A technology of signal error and optimization method, applied in transmission monitoring, electrical components, transmission system and other directions, can solve problems such as the inapplicability of large antenna arrays and the failure to consider various array errors.

Active Publication Date: 2017-05-31
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, most of the existing comprehensive methods do not take into account the existence of multiple array errors, or are not suitable for large antenna arrays

Method used

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  • Optimizing method for processing signal errors of different array antennas
  • Optimizing method for processing signal errors of different array antennas
  • Optimizing method for processing signal errors of different array antennas

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Embodiment Construction

[0047] The number of elements of the linear array considered in this embodiment is N=20, the distance between the elements d=λ / 2 (λ is the wavelength of the incoming wave), and then the center frequency fc is set to 9.57e9 Hz.

[0048] Step 1: According to the received signal and the structure of the antenna itself, set the corresponding parameters, and thus obtain the model of the array factor AF(θ).

[0049] Step 1.1: Assuming that there is no mutual coupling between the array elements, the excitation amplitude is a n , with Is the actual amplitude and the expected amplitude a n The maximum deviation between (n=0,1,...,N-1), considering the maximum deviation of the excitation amplitude of the array is (I.e. the percentage error is ).

[0050] with Are the minimum and maximum values ​​of the n-th amplitude coefficient, and the tolerance interval can be expressed as

[0051] Step 1.2: The phase of the array factor is Is the excitation phase, n=0,1,...,N-1, N is the number of a...

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Abstract

The invention discloses an optimizing method for processing signal errors of different array antennas, and relates to the signal processing field of the antenna arrays, especially to an optimized design method for processing errors of the different arrays. According to measured amplitude array and array element phase error of reception signals of an array, an IA algorithm is used to determine an array factor model, an accurate change boundary of a power directional diagram is calculated, a convex optimization model of an array excitation amplitude is established, and a power directional diagram satisfying the performance requirement is obtained in an integrated way according to an obtained optimization excitation weight. Compared with an IA-PSO algorithm in a global random searching manner, the method of the invention can be used to obtain a better array excitation parameter under the same error, and the amplitude error of the array is kept relatively stable. Important parameters including the sidelobe level, the main lobe width and the array direction coefficient can be controlled effectively in antenna design.

Description

Technical field [0001] The present invention relates to the field of antenna array signal processing, in particular, it is an optimized design method for processing multiple array errors. Background technique [0002] With the continuous development of information technology, array antennas have become a hot spot in antenna neighborhood research and application in recent years. They are widely used in military and social life, such as radar monitoring, satellite communications, and so on. However, in these applications, the array antenna needs to analyze and reduce the mismatch between the ideal numerical integrated radiation pattern and the actual measurement result through a time-consuming and expensive radiation characteristic measurement process. In order to ensure that the antenna achieves the expected radiation characteristics, it is necessary to correct the control parameters of the antenna, such as the number of elements, the spacing of the elements, and the excitation we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/12H04B17/391
CPCH04B17/12H04B17/391
Inventor 张瑛赵丹旎汪婷静王琼龙政斌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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