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New algorithm of toughness parallel factor analysis under pulse noise environment

A technology of impulse noise and parallel factor, which is applied to radio wave measurement systems, instruments, etc.

Active Publication Date: 2016-11-23
DALIAN UNIVERSITY
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Problems solved by technology

Song Aimin used the MCC criterion to solve the problem of time delay estimation under stable distribution noise[9]

Method used

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  • New algorithm of toughness parallel factor analysis under pulse noise environment
  • New algorithm of toughness parallel factor analysis under pulse noise environment
  • New algorithm of toughness parallel factor analysis under pulse noise environment

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Embodiment Construction

[0095] The present invention will be further described below in conjunction with the accompanying drawings.

[0096] Assuming that the number of transmitting array elements and receiving array elements is M=6 and N=8 respectively, there are two targets in the far field of the bistatic MIMO radar, that is, P=2, relative to the transmitting angle and receiving angle of the transmitting array element and receiving array element respectively Doppler frequency parameter f d1 = 160Hz, f d2 =100Hz, the number of echoes L=100. Each transmitting array element transmits mutually orthogonal Hadamard coded signals, and the number of phase codes in each repetition period is Q=256. This section uses the generalized signal-to-noise ratio [16] (Generalized Signal-to-Noise Ratio, GSNR) as a measure of signal and impulse noise. The generalized signal-to-noise ratio is defined as

[0097] G S N R = 10 l g...

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Abstract

The present invention relates to a new algorithm of toughness parallel factor analysis under a pulse noise environment and belongs to the computer application technical field. According to the new algorithm of the invention, an MCC (maximum correntropy criterion) is adopted to improve a TALS criterion-based cost function in a PARAFAC algorithm, so that a new algorithm applied to bistatic MIMO radar target parameter joint estimation under a pulse noise environment can be obtained through derivation. With the new algorithm adopted, the interference of impulsive noises can be effectively suppressed, and automatic matching can be realized. The new algorithm has high estimation accuracy. As indicated by simulation tests, under an impulsive noise and Gaussian noise environment, compared with a TLAS criterion-based PARAFAC algorithm, the MCC_PARAFAC algorithm has better parameter estimation performance and has better adaptability to a sharply-changing signal environment.

Description

technical field [0001] The invention relates to a new algorithm of toughness parallel factor analysis under the environment of impulse noise, and belongs to the technical field of computer application. Background technique [0002] Bistatic MIMO (Multiple-Input Multiple-Output) radar is a new radar system that combines MIMO technology with bistatic radar technology [1-2] . Among them, the bistatic coherent MIMO radar utilizes the coherence characteristic between the echo signals received by the receiving array, and separates the signals with the help of a matched filter. Mutually orthogonal signals, while all transmitting and receiving antenna pairs have the same RCS value. The invention mainly studies the parameter estimation problem of bistatic coherent MIMO radar. [0003] Estimation and localization of target parameters is an important content of radar signal processing. Literature [3-5] studied MIMO radar parameter estimation methods such as MUSIC, ESPRIT, dimension...

Claims

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 李丽
Owner DALIAN UNIVERSITY
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