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Array antenna radiation and scattering comprehensive optimization method based on electromagnetic cancellation

A technology of an array antenna and an optimization method, which is applied in the field of comprehensive optimization of radiation and scattering of array antennas based on electromagnetic cancellation, and comprehensive optimization of radiation and scattering of array antennas, can solve the problem that the RCS of the array antenna cannot be effectively reduced, the RCS of the structural mode term cannot be reduced, low-level issues

Pending Publication Date: 2020-11-24
XIDIAN UNIV
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Problems solved by technology

However, the RCS of the array antenna is composed of two parts: the antenna mode item RCS and the structural mode item RCS. Because the feed ports of each array element of the array antenna are well matched, the magnitude of the antenna mode item RCS is often much lower than the structural mode item RCS
Therefore, the RCS control method in this method can only optimize the control of the antenna mode item RCS of the array antenna, and cannot reduce the structural mode item RCS, so it cannot effectively reduce the RCS of the array antenna

Method used

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  • Array antenna radiation and scattering comprehensive optimization method based on electromagnetic cancellation
  • Array antenna radiation and scattering comprehensive optimization method based on electromagnetic cancellation
  • Array antenna radiation and scattering comprehensive optimization method based on electromagnetic cancellation

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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] refer to figure 1 , the present invention comprises the steps:

[0051] Step 1) Construct the electromagnetic cancellation scene model:

[0052] refer to figure 2 , under the three-dimensional coordinate system XYZ, an array antenna A=[A 1 ,A 2 ,...,A n ,...,A N ]; place M radars in the far zone T=[T 1 , T 2 ,...,T m ,...,T M ]; Let the distance from the observation point P in the next far zone of the three-dimensional coordinate system XYZ to the coordinate origin be r, the pitch angle be θ, and the azimuth angle be Wherein, N≥2, N=80 in this embodiment, the nth antenna unit A n The feed amplitude, feed phase and excitation current are respectively α n , β n and I n , M≥1, the mth radar T m in the direction of The present invention is applicable to multiple array forms such as linear arrays, planar arrays ...

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Abstract

The invention provides an array antenna radiation and scattering comprehensive optimization method based on electromagnetic cancellation, and aims to effectively reduce RCS of an array antenna while realizing good radiation characteristics. The implementation steps are as follows: constructing an electromagnetic cancellation scene model; acquiring a radiation field of an array antenna; acquiring ascattering field of the array antenna; calculating the total field of the array antenna; defining an optimization algorithm fitness function fit (x); and obtaining a comprehensive optimization resultof the radiation and scattering characteristics of the array antenna by utilizing an optimization algorithm. According to the invention, the problem of comprehensive optimization of the radiation andscattering characteristics of the array antenna is solved, and the RCS of the array antenna is effectively reduced while good radiation characteristics are realized.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to an array antenna radiation and scattering comprehensive optimization method, in particular to an array antenna radiation and scattering comprehensive optimization method based on electromagnetic cancellation, which can be used for the array antenna comprehensive optimization problem. Background technique [0002] With the development of detection technology, the reduction of target radar cross section is undoubtedly of great significance. Antenna is a scatterer for transmitting and receiving electromagnetic waves. With its wide application in military platforms, reducing its RCS can effectively reduce the probability of equipment being detected. Therefore, it is a key issue to study the RCS of array antennas. So far, a completely ideal way has not been found at home and abroad: it can significantly reduce the RCS of the array antenna without affecting its radiation performance at ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10G06F30/27G06N3/12H01Q21/00G06F111/06
CPCG06F17/10G06F30/27G06N3/126H01Q21/00G06F2111/06
Inventor 张帅黄楠白婵张倩铢刘雨果柏文泉周肖
Owner XIDIAN UNIV
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