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Beam forming method for improving emission gain of distributed polarization sensitive array

A polarization-sensitive array and transmit gain technology, applied in the directions of space transmit diversity, diversity/multi-antenna systems, electrical components, etc., can solve the problem of no longer applicable to polarization-sensitive arrays, etc., so as to improve the transmit gain and increase the gain of the interference signal. Effect

Pending Publication Date: 2020-08-25
HARBIN ENG UNIV
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Problems solved by technology

But in the polarization-sensitive array, due to the addition of the polarization domain information, the digital beamforming weight vector of the scalar array is no longer suitable for the polarization-sensitive array

Method used

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  • Beam forming method for improving emission gain of distributed polarization sensitive array
  • Beam forming method for improving emission gain of distributed polarization sensitive array
  • Beam forming method for improving emission gain of distributed polarization sensitive array

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Embodiment Construction

[0038] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0039] figure 1 It is a system block diagram of the existing integrated platform for reconnaissance and jamming to transmit jamming signals, and only uses a single channel for jamming emission;

[0040] combine figure 2 , a digital beamforming method suitable for a distributed polarization-sensitive array, that is, a conformal array, of the present invention includes a distributed polarization-sensitive array composed of N conformal linearly polarized array elements, and the steps are as follows:

[0041] Step 1: Signal Acquisition

[0042] The distributed polarization-sensitive array composed of conformal linearly polarized array elements is used to receive the far-field incident narrowband signal in the space, and the received data vector x(t) is obtained:

[0043] x(t)=as(t)+n(t)

[0044] In the formula, a is the steering vector, s(t...

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Abstract

The invention discloses a beam forming method for improving the emission gain of a distributed polarization sensitive array. According to the invention, the method comprises the steps: carrying out the DOA and polarization parameter estimation on signals received by an array, calculating a weighted vector according to estimation parameters and a space matching filter principle, and finally carrying out digital beam forming on output signals of all channels according to the weighted vector to obtain a final emission signal. The weighting vector obtained by the method considers the influence ofpolarization information, the transmitting gain of the interference signal can be improved in a conformal array reconnaissance and interference integrated platform, and the defect that the gain cannotbe further improved because the interference signal can only be transmitted from one antenna in the existing method is overcome.

Description

technical field [0001] The invention relates to a beam forming method for improving the emission gain of a distributed polarization-sensitive array, belonging to the field of electronic countermeasures. Background technique [0002] At present, with the maturity of conformal antenna technology, distributed polarization-sensitive arrays have been applied. However, in the integrated reconnaissance and jamming platform, due to the distributed placement of antennas and the non-uniform polarization, currently only a single channel is used for jamming For transmission, if multiple channels can be transmitted simultaneously like a phased array, the transmission gain can be improved and the interference efficiency can be enhanced. To solve this problem, for traditional scalar arrays, digital beamforming technology can be used to increase the transmit signal gain through multi-channel weighting. But in the polarization-sensitive array, due to the addition of the polarization domain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04B7/0617
Inventor 陈涛赵立鹏郭沐然史林申梦雨
Owner HARBIN ENG UNIV
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