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Response Error Envelope Weighted Least Squares Spatial Matrix Filter Design Method

A space-domain matrix filtering and weighted least squares technology, which is applied to the shaping network and baseband system components in the transmitter/receiver, and can solve the problems of low iteration performance and slow convergence speed.

Active Publication Date: 2019-12-10
PLA DALIAN NAVAL ACADEMY
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Problems solved by technology

The optimal solution of the filter can be directly given by using the least squares spatial domain matrix filter response weighting method, and at the same time iterating the response weighting coefficients can obtain a constant stopband response or a constant passband response error, but the existing iteration The weighting method adopted by the method has low iterative performance and slow convergence speed

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  • Response Error Envelope Weighted Least Squares Spatial Matrix Filter Design Method
  • Response Error Envelope Weighted Least Squares Spatial Matrix Filter Design Method
  • Response Error Envelope Weighted Least Squares Spatial Matrix Filter Design Method

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Embodiment Construction

[0060] The specific implementation example of the present invention is described in detail below in conjunction with scheme and accompanying drawing.

[0061] The iterative algorithm based on the weighting criterion of the response error envelope is as follows:

[0062] Step 1: Let k=0, discretize the detection space, and calculate A, B. order w 0 (θ s )=1, calculate the initial optimal spatial domain matrix filter Set the left stop band, pass band, right stop band response scale factor γ(θ m ),

[0063] Step 2: Calculate E k (θ m )=H k a(θ m )-b(θ m ), m=1,=,M. Seeking|E k (θ m )| local maximum point, get the abscissa of the local maximum and its corresponding ordinate E.g, Figure 2a , Figure 2b with Figure 2c Among them, is the passband response error, the left and right stopband responses, and the line segment is the connection between the corresponding local maxima.

[0064] Step 3: Take advantage of with The extension of the line connecting two...

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Abstract

The invention belongs to the array signal processing technical field and relates to data processing of a sensor array, and in particular relates to a response error envelope weighted least-square space-domain matrix filtering design method. The method is characterized in that constant passband response error and constant stopband response are obtained through least-square space-domain matrix filter weight parameter iteration. According to the method, the proportional coefficient of passband response error and stopband response can be set, so that the response effects of passband and stopband can be adjusted.

Description

technical field [0001] The invention belongs to the technical field of array signal processing, relates to data processing of sensor arrays, and particularly relates to a design method of a least square space matrix filter using extreme value point envelope weighting. 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 matrix filtering technology is to preserve the passband signal and suppress strong interference by preprocessing the received array data. This technology has been widely used in the field of array signal processing, especially in the field of underwater acoustic signal processing. The spatial domain matrix filter can be used for array data preprocessing of target orientation estimation, and can also be used for array data preprocessing...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L25/02
Inventor 韩东徐池任重吴清华郭谊李利
Owner PLA DALIAN NAVAL ACADEMY