Stop-band response weighting passband total response error constraint spatial domain matrix filter design method

A filter design and error constraint technology, applied in impedance networks, adaptive networks, electrical components, etc., can solve problems such as complex calculations, inability to directly give optimal solutions, and unfavorable real-time spatial matrix filter design.

Active Publication Date: 2016-10-12
PLA DALIAN NAVAL ACADEMY
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Problems solved by technology

However, since the constant stopband response constrained spatial domain matrix filter needs to limit the maximum value of the stopband response or passband response error to be less than a certain constraint value, the established optimization problem cannot directly give the optimal solution, and requires the help of a complex optimal solution. Optimization theory and algorithm solution, complex calculation, not conducive to real-time spatial domain matrix filter design, especially for wideband array signal processing, especially in the case of designing corresponding spatial domain matrix filters for multiple subbands

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  • Stop-band response weighting passband total response error constraint spatial domain matrix filter design method
  • Stop-band response weighting passband total response error constraint spatial domain matrix filter design method
  • Stop-band response weighting passband total response error constraint spatial domain matrix filter design method

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Embodiment Construction

[0065] The specific implementation examples of the present invention are described in detail below in conjunction with the scheme.

[0066] The iterative algorithm based on the matrix filter stopband response envelope weighting criterion is as follows:

[0067] Step 1: k=0, discretize the detection space to obtain V P , V S , Θ S1 , Θ S2 . By ξ, calculate the initial optimal spatial domain matrix filter Set the response ratio of left stop band and right stop band γ(θ s ), let w 0 (θ s )=1;

[0068] Step 2: Calculate |E k (θ s )|=|H k a(θ s )|, s=1,...,S. Seeking|E k (θ s )| local maximum point, get the abscissa of the local maximum and its corresponding ordinate

[0069] Step 3: Take advantage of and The extension of the line connecting two points, calculated on the abscissa θ 1 The value z at 1 , set (θ 1 ,max(|E k (θ 1 )|,z 1 )) is the starting point of envelope weighting.

[0070] Step 4: Leverage and The extension of the line connecting ...

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Abstract

The invention belongs to the technical field of array signal processing, and relates to sensor array data processing, and especially relates to a spatial domain matrix filter design method. The method is characterized in that the method obtains constant left and right stop-band responses in a mode of iteration of optimal spatial domain matrix filter weight parameters, and passband response errors meet set constraints. A weighting coefficient matrix is obtained through an envelope of the response of a matrix filter stop band. The left and right stop-band responses can be equal, and the difference between the left and right stop-band responses can be set through adjusting the proportion of the left and right stop-band responses.

Description

technical field [0001] The invention belongs to the technical field of array signal processing, relates to data processing of sensor arrays, and in particular relates to a design method of a space domain matrix filter. Background technique [0002] This patent is supported by the National Natural Science Foundation of China project "Spatial Domain Matrix Filtering Technology and Its Application Research in Underwater Acoustic Signal Processing", project number No.11374001. [0003] The spatial domain matrix filter performs array element domain data processing before the array data is used for target orientation estimation. Let the spatial domain matrix filter designed for frequency ω be H(ω), and use the target orientation estimation and matching field to locate the mathematical model of the source incident to the array for data filtering. The array receives the far-field plane wave, and the receiving array data is the product of the direction vector and the source, and the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H21/00
Inventor 张海勇韩东纪凯徐池解恺张永
Owner PLA DALIAN NAVAL ACADEMY
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