Determination method of antenna array phase response parameter with unknown signal direction

Abstract

The invention belongs to the technical field of electronic information and discloses a determination method of an antenna array phase response parameter. The determination method comprises initialization processing. A sample autocorrelation matrix of an antenna array receiving signal vector is determined. A signal subspace matrix and a noise subspace matrix of the sample autocorrelation matrix are determined. A direction matrix is determined. A signal guiding vector is determined. Finally, an antenna array phase response parameter is determined. According to the method, the signal subspace matrix of the antenna array receiving signal vector is used for establishing a non-phase vector and the direction matrix, and by determining signal direction, the signal guiding vector and the like, the antenna array phase response parameter is determined. The method is used for determination, and the correlation coefficient of the result and a practical phase response parameter vector is larger than 0.99. Accordingly, under the situation that signal direction is unknown, the antenna array phase response parameter can be determined effectively, the method has the advantages that errors between the determined phase response parameter and the practical phase response parameter are small, and similarity is high.

Description

Technical field [0001] The invention belongs to a method for measuring phase response parameters of an antenna array in the field of electronic information technology, in particular a signal subspace matrix of the signal vector received by the antenna array is used to construct a phaseless vector and a direction matrix, and then the signal direction and signal steering vector are measured And so on, and then determine the method of antenna array phase response parameters. Background technique [0002] The technology of using antenna arrays to receive signals for information acquisition and detection has been widely used in modern electronic reconnaissance, radar, communications, sonar, earthquake, radio astronomy and many other fields. A prerequisite for using an antenna array to find directions for multiple signals is to assume that the phase response parameters of the antenna array are consistent or known. However, in practical applications, the phase response parameter charac...

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Problems solved by technology

In an environment with interference signals, since the antenna array received signal vector x(t) is the actual steering vector b(θ 1 ) and b(θ 2 ), leading to direct use of x(t) and a(θ 1 ) to determine the estimate of the antenna array phase response parameter vector p There is a large deviation

[0009] Furthermore, when the known correction signal direction θ 1 When there is an error, the steering vector a(θ 1 ) also has errors, resulting in the use of x(t) and a(θ 1 ) The accuracy of the phase response parameters of the antenna array determined by

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