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A phased array-mimo radar mode transceiver beamforming anti-jamming method

A phased array and radar technology, applied to radio wave measurement systems, complex mathematical operations, instruments, etc., can solve the problems of insufficient FPMIMO radar research and lack of algorithm robustness design, etc., to reduce the number of physical array elements and improve Algorithm degree of freedom, effect of reducing hardware cost

Active Publication Date: 2021-11-02
ROCKET FORCE UNIV OF ENG
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Problems solved by technology

[0004] The purpose of the present invention is to provide a phased array-MIMO radar mode transceiver beamforming anti-jamming method to solve the problems in the prior art that the research on FPMIMO radar in the air domain filtering algorithm is not deep enough and lacks the robustness design of the algorithm

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  • A phased array-mimo radar mode transceiver beamforming anti-jamming method
  • A phased array-mimo radar mode transceiver beamforming anti-jamming method
  • A phased array-mimo radar mode transceiver beamforming anti-jamming method

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Embodiment 1

[0067] This embodiment discloses a phased array-MIMO radar mode transceiver beamforming anti-jamming method, wherein the antenna is a ULA including 16 array elements, and is evenly divided into 8 overlapping sub-arrays, adjacent arrays The element spacing is half a wavelength, and the desired target is at the angle θ 0 =10°, there are three interference targets located at θ 1 =-30°, θ 2 =40° and θ 3 =60°, and INR=40dB of all disturbances. During the simulation process, the additive noise signal is modeled as a Gaussian random sequence with a mean of 0 and a variance of 1, and the noise of each array element is independent and identically distributed. The transmit signal parameters are set to the pulse width T p =10μs, bandwidth B =3MHZ, frequency interval f z =3MHZ, sampling frequency f s =20MHZ. For the proposed algorithm, the angle interval where the expected signal is located in the simulation process is set [ θ 0 -5°, θ 0 +5°].

[0068] In order to full...

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Abstract

The invention discloses a phased array-MIMO radar mode transceiver beamforming anti-interference method. By combining the structural characteristics of the sub-array level array with the FPMIMO radar working mode, the one-dimensional array adopts the uniform overlapping sub-array division method, and the signal In the process of sending and receiving, each sub-array forms signal receiving and transmitting beams in a phased array manner, and the receiving signals of all sub-arrays can be equivalent to the receiving signals of a sub-array-level ULA, and INCM reconstruction and steering vectors are performed based on the sub-array-level ULA Estimation, through the virtual extension of the steering vector to estimate the steering vector of the FPMIMO radar’s transmit and receive beamforming, and use the reconstructed INCM’s main eigenvectors and eigenvalues ​​to perform virtual reconstruction to obtain the virtual extended INCM of the FPMIMO radar, so as to achieve one-dimensional uniform overlap Subarray FPMIMO radar with robust transmit and receive beamforming. The invention enhances the ability to receive the expected signal, improves the suppression performance of the interference signal, and has the characteristics of low side lobe, deep zero trap, good robustness and the like.

Description

technical field [0001] The invention belongs to the field of beam forming of array antennas, and in particular relates to an anti-interference method for transmitting and receiving beams in a phased array-MIMO radar mode. Background technique [0002] In the field of transmit and receive beamforming, there has been a lot of research in the prior art. HPMIMO (Hybrid Phased-Multiple-Input-Multiple-Output) is a working mode of hybrid phased array-multiple-input-multiple-output radar. Chinese patent CN103605122A proposes a dimensionality reduction adaptive DBF method for HPMIMO radar. This method uses a double iteration method to calculate the optimal weight vector required for transceiving beamforming, which reduces the computational complexity of the weight vector calculation process. Zou Jialong et al. studied the HPMIMO radar transceiver beamforming based on the full overlapping sub-array division method, analyzed the influence of the number of array sub-arrays on the perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/42G01S7/36G06F17/16G06F17/14
CPCG01S7/36G01S7/42G06F17/14G06F17/16
Inventor 杨剑胡昌华卢建钟都都涂育维姚志成侯博
Owner ROCKET FORCE UNIV OF ENG
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