A Direction of Arrival Estimation Method Combining Matrix Beam and Root Finding Music
A technology of direction of arrival estimation and matrix beam, which is applied in the direction of direction determination director, radio wave measurement system, instrument, etc., and can solve the problems of low spatial angle resolution and so on.
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[0131] Such as image 3 As shown, in this embodiment, the antenna array is composed of M×N uniformly distributed array elements at equal distances. Based on the antenna array, the present invention provides a method for estimating the direction of arrival of a matrix beam combined with root-finding MUSIC, such as figure 1 As shown, the DOA estimation method includes the following steps:
[0132] S1, construct block Hankel matrix (as figure 2 shown), and further obtain the autocorrelation data matrix, obtain the noise subspace and signal subspace by singular value decomposition, and construct the matrix bundle equation;
[0133] Further, the step S1 specifically includes:
[0134] S11. According to the matrix sequence {D 0 (t),D 1 (t)...,D M-1 (t)} and the noise-free signal sequence {z (m,0) (t),z (m,1) (t),...,z (m,N-1) (t)} to process and construct the block Hankel matrix; as figure 2 Shown is a schematic diagram of the structure of the block Hankel matrix in the p...
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