| 摘要 |
PROBLEM TO BE SOLVED: To enable the arrival direction of a plurality of arrival waves to be accurately estimated by accurately separating the plurality of arrival waves even when the arrival waves emitted from a plurality of emitting sources have a high dynamic range or there is the correlation between the plurality of arrival waves.SOLUTION: A projection matrix calculation unit 5 for calculating a projection matrix P to be projected into a space orthogonal to a true steering vector a(θ)is provided using a steering matrix A outputted from a VESPA processing unit 4, and an arrival direction search unit 6 calculates a product of a steering vector a(θ) and the projection matrix P while changing the arrival direction θ shown by the set steering vector a(θ), and searches the arrival direction θ in which the product becomes zero.SELECTED DRAWING: Figure 1 |
