Delay fast beat-based uniform linear array high-resolution direction-of-arrival estimation method
A direction of arrival estimation and high-resolution technology, which is applied to radio wave measurement systems, direction-determining directional devices, measurement devices, etc., can solve the problems of performance deterioration of estimation methods, etc. High resolution effect
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[0060] The present invention will be described in detail below in conjunction with the accompanying drawings. A high-resolution DOA estimation method based on delay snapshots for uniform line arrays. First, the received signals of all array elements are sampled, and the obtained array snapshot signals are stored in the memory; secondly, the memory is selected in a certain order. array snapshot signal, construct the delay snapshot, and obtain the data matrix from the delay snapshot; then, calculate the signal covariance matrix from the data matrix, perform eigendecomposition on the signal covariance matrix to obtain the eigenvalues and eigenvectors, and compare The eigenvectors corresponding to the small eigenvalues constitute the noise subspace; then, the spatial power spectrum is calculated according to the noise subspace and the array steering vector, and the spectral peak of the spatial power spectrum is searched to determine the mapped direction of arrival; finally, acc...
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