A Method for Measuring Phase Response Parameters of Antenna Array with Unknown Signal Direction

Abstract

The invention belongs to a method for measuring antenna array phase response parameters in the field of electronic information technology, including initialization processing, determining the sample autocorrelation matrix of the antenna array received signal vector, determining the signal subspace matrix and noise subspace matrix of the sample autocorrelation matrix, Determine the direction matrix, determine the signal steering vector, and finally determine the phase response parameters of the antenna array. The invention utilizes the signal subspace matrix of the antenna array receiving signal vector to construct the non-phase vector and direction matrix, and then measures the phase response parameters of the antenna array by measuring the signal direction and signal steering vector; using this method to measure, the result is consistent with the actual phase response The correlation coefficient between parameter vectors is greater than 0.99. Therefore, the invention has the characteristics that the phase response parameters of the antenna array can be effectively measured when the signal direction is unknown, and the error between the measured phase response parameters and the actual phase response parameters is small and the similarity is high.

Description

technical field [0001] The invention belongs to the method for measuring the phase response parameters of an antenna array in the field of electronic information technology, in particular to a method for using the signal subspace matrix of the antenna array receiving signal vector to construct a non-phase vector and a direction matrix, and then by measuring the signal direction and signal steering vector etc., and then the method of measuring the phase response parameters of the antenna array. Background technique [0002] The technology of using antenna array to receive signals for information acquisition and detection has been widely used in modern electronic reconnaissance, radar, communication, sonar, earthquake, radio astronomy and many other fields. A prerequisite for using an antenna array to find the direction of multiple signals is to assume that the phase response parameters of the antenna array are consistent or known. However, in practical applications, the phas...

AI Technical Summary

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

Images