Low complexity DOA and polarization joint estimation method under electromagnetic vector nested L array
An electromagnetic vector, low-complexity technology, used in radio wave measurement systems, measurement devices, direction-determining direction guides, etc., and can solve problems such as fewer polarization-sensitive arrays
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[0090]The present invention will be further explained below in conjunction with the accompanying drawings. Symbol representation: use (·) in the present invention T Indicates the matrix transpose, ( ) H Represents matrix conjugate transpose, ( ) * Represents matrix conjugation, capital letter X represents matrix, lowercase letter x( ) represents vector, I p Expressed as a P×P identity matrix, Represents the Kronecker product, ⊙ represents the Khatri-Rao product, diag(x) represents a diagonal matrix composed of elements in x, E{·} represents the expectation of the matrix, and angle(·) represents the phase angle operation.
[0091] A low-complexity DOA and polarization joint estimation method under an electromagnetic vector nested L array, comprising the following steps:
[0092] Step 1: vectorize the covariance matrix R of the received signal, and perform row transformation on the virtual signal r obtained after vectorization to obtain a new virtual signal r';
[0093] St...
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