Joint parameter estimation method based on distributed polarization sensitive array

Abstract

The invention provides a joint parameter estimation method based on a distributed polarization sensitive array. The joint parameter estimation method includes dispersedly setting array element components of a polarization sensitive array consisting of electric dipole pairs in the space so as to form the distributed polarization sensitive array, dividing the distributed polarization sensitive array into a first sub array and a second sub array according to sequence of array elements, acquiring a covariance matrix of incident signals after the distributed polarization sensitive array receives the incident signals, establishing a signal sub space according to the covariance matrix, dividing the signal sub space consisting of the covariance matrix into a first sub matrix and a second sub matrix according to sequence of line numbers of the matrix, and acquiring estimation to angle of arrival and polarization parameter of the incident signals according to rotational invariance of the first sub matrix and the second sub matrix.

Description

technical field [0001] The invention relates to the field of array signal processing, in particular to a parameter joint estimation method based on a distributed polarization-sensitive array. Background technique [0002] A complete electromagnetic vector sensor consists of 3 electric dipoles and 3 magnetic dipoles placed in space. They are placed at a common point in space and are orthogonal to each other, thus forming a polarization-sensitive array that can receive all the electric field components of incident electromagnetic waves. and magnetic field components, so compared with the traditional scalar array, the polarization-sensitive array can receive more information of the incident signal. In addition, the polarization sensitive array can sense the polarization information of the incident signal, so as to obtain the polarization parameter of the incident electromagnetic signal. However, the traditional scalar array cannot obtain the polarization parameters of the inci...

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Problems solved by technology

However, in practice, since the space electric field and magnetic field are time-varying, the time-varying electric field can generate a magnetic field, and the time-varying magnetic field can generate an electric field. At the same time, electric dipoles and magnetic dipoles are used to form polarization-sensitive arrays, There is some redundancy

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