| 摘要 |
PROBLEM TO BE SOLVED: To receive a signal with good performance without depending on the number of constraints.SOLUTION: A pseudonoise-added correlation matrix that is a reception signal vector obtained from an array antenna and having an amount of pseudonoise added thereto is created by a correlation matrix creating unit 2, and a constraint matrix that defines plural number of constraints by a constraint angle input via a terminal 14 is created by a constraint matrix creating unit 14, and a weight is calculated by using the pseudonoise-added correlation matrix. A ratio of an output power calculated based on the weight and the correlation matrix to an output power by all of the reception signals is calculated by an output power ratio calculating unit 11. A threshold value determined in correspondence with the output power ratio and a weight norm calculated by a weight norm calculating unit 10 are compared by a comparison and determination unit 13 to determine whether the norm is the same as or smaller than the threshold value. When the norm is the same as or smaller than the threshold value, the weight is output to a weight multiplication unit. When the norm is larger than the threshold value, a pseudonoise adding unit 7 is controlled to change the amount of pseudonoise and a pseudonoise-added correlation matrix is created again. |
