Signal arrival angle estimation method and device and computer readable storage medium

Abstract

The invention provides a signal arrival angle estimation method and device and a computer readable storage medium. The method comprises the steps: carrying out preprocessing of a plurality of paths ofsignals received by a non-omnidirectional array antenna to obtain a receiving phase sequence; performing phase compensation on the received phase sequence to obtain a compensation phase sequence corresponding to each of the plurality of candidate arrival angles; executing phase difference operation according to the compensation phase sequence corresponding to each candidate arrival angle to obtain a phase difference sequence corresponding to each candidate arrival angle; and performing weighted summation according to the absolute value of the phase difference sequence corresponding to each candidate arrival angle in combination with an antenna pattern of the array antenna, and estimating a signal arrival angle from the plurality of candidate arrival angles according to a summation result.With the method, the estimation error caused by the jitter of the received signal can be reduced.

Description

technical field [0001] The invention belongs to the field of signal processing, and in particular relates to a signal arrival angle estimation method, device and computer-readable storage medium. Background technique [0002] This section is intended to provide a background or context for implementations of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] Signal angle of arrival estimation has always been an important research topic in the field of array signal processing, and has been widely used in radar, wireless communication and other fields. Among traditional signal angle of arrival estimation algorithms, MUSIC algorithm and ESPRIT algorithm are commonly used. It decomposes the covariance matrix of the array received data into mutually orthogonal signal subspaces and noise subspaces, and uses the direct relationship between the signal and noise subspaces to estimate the angle ...

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Problems solved by technology

[0003] Signal angle of arrival estimation has always been an important research topic in the field of array signal processing, and has been widely used in radar, wireless communication and other fields. Among traditional signal angle of arrival estimation algorithms, MUSIC algorithm and ESPRIT algorithm are commonly used. It decomposes the covariance matrix of the array received data into mutually orthogonal signal subspaces and noise subspaces, and uses the direct relationship between the signal and noise subspaces to estimate the angle of arrival of the signal. It is estimated that the eigenvalue decomposition of the covariance matrix is ​​required, so the amount of calculation required is large

[0004] In addition, it is also possible to determine the phase angle corresponding to each array element in the antenna under different incident angles according to the antenna arrangement, obtain the standard antenna direction in the ideal situation, and then compare the actual received signal with the standard antenna direction at different incident angles After estimating the angle of arrival, although this method has a small amount of calculation, it is easy to cause a large estimation error due to the jitter of the received signal

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