EXPECTED-POWER-VALUE ESTIMATION DEVICE AND EXPECTED-POWER-VALUE ESTIMATION METHOD

An expected-power-value estimation device is configured to in such a way as to include: a covariance matrix calculation unit that acquires a received signal vector of a reflected wave from a reception array antenna that receives the reflected wave from a target, and calculates a covariance matrix of the received signal vector; and an unnecessary vector value removal unit that removes a vector value present inside a convex hull of the array manifold vector from among a plurality of vector values that the array manifold vector of the reception array antenna can take. Furthermore, the expected-power-value estimation device includes an expected-power-value estimation unit that estimates an expected-power-value of the reflected wave using a vector value that is not removed by the unnecessary vector value removal unit among the plurality of vector values that the array manifold vector can take, and the covariance matrix calculated by the covariance matrix calculation unit.