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Coherent distributed non-circular signal angle parameter combined estimation method based on generalized complex correlation entropy

An angle parameter, non-circular signal technology, used in direction finder, direction finder using radio waves, radio wave direction/bias determination system, etc., can solve the problems of performance degradation, failure, etc. The effect of robustness

Pending Publication Date: 2019-01-29
DALIAN UNIV OF TECH
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Problems solved by technology

Aiming at the problem of performance degradation or even failure of traditional algorithms for estimating angle parameters of coherent distributed non-circular signals under the interference of impulse noise, there is no reference yet.

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  • Coherent distributed non-circular signal angle parameter combined estimation method based on generalized complex correlation entropy
  • Coherent distributed non-circular signal angle parameter combined estimation method based on generalized complex correlation entropy
  • Coherent distributed non-circular signal angle parameter combined estimation method based on generalized complex correlation entropy

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention and accompanying drawings are further described in detail below:

[0026] A method for estimating angle parameters of coherent distributed non-circular signals using generalized complex correlation entropy, the overall system block diagram is as follows figure 1 shown. This method can be mainly divided into three steps, respectively constructing the output signal of the extended array, solving the generalized complex correlation entropy matrix of the output signal of the extended array, and calculating the joint angle parameters of the coherent distributed sources. The specific steps are as follows:

[0027] Step A. Obtain the extended array output signal, including the following sub-steps:

[0028] A1. Using Uniform Linear Arrays to Receive Coherent Distributed Signals Caused by Multipath Scattering

[0029] For a uniform...

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Abstract

The invention provides a coherent distributed non-circular signal angle parameter combined estimation method based on generalized complex correlation entropy, and belongs to the distributed source wireless positioning technical field in a multi-path environment; the method uses non-circular signal property to expand an array output matrix, and uses the generalized complex correlation entropy suppress noise interferences by pulse noises on a received signal. The method processes the expanded array output matrix, extracts an expanded generalized complex correlation entropy matrix and a steeringvector matrix, and uses a DSPE algorithm mind to extract angle parameter information contained in the steering vector matrix, thus estimating the center DOA and a diffusion angle. According to tests,the method is excellent in performance, and can accurately estimate the angle parameters of the distributed source signal under the pulse noise interference environment.

Description

technical field [0001] The invention belongs to the technical field of distributed source wireless positioning in a multipath environment, and relates to a joint estimation algorithm of coherent distributed non-circular signal angles, in particular to a joint estimation of coherent distributed non-circular signal angle parameters based on generalized complex correlation entropy method. Background technique [0002] Using the non-circular characteristics of the signal can improve the performance of the angle parameter estimation algorithm of the distributed source, but these algorithms all assume that the noise is Gaussian distributed. In a complex electromagnetic interference environment, the impulse noise will cause corresponding interference to the information of the received signal. . In the environment of alpha stable distribution, the performance of traditional algorithms degrades seriously. For the problem of performance degradation or even failure of traditional alg...

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Application Information

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IPC IPC(8): G01S3/14
CPCG01S3/143
Inventor 邱天爽朝乐蒙田全李景春李蓉
Owner DALIAN UNIV OF TECH
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