Importance

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Abstract

A sensor and sensing method are provided in which a ghost which significantly occurs when only higher frequencies are present can be reduced, and a high directivity which is not obtained when only lower frequencies are present can be obtained. A sensor 100 for detecting a direction of an object to be sensed (target), includes a sensing section 102 configured to sense wave motions having a plurality of frequencies which come from the target 2, an information acquisition section 106 configured to acquire information about incoming directions of the wave motions, and a determination section configured to determine the direction of the target 2. The sensing section 102 senses at least a first wave motion having a first one of the plurality of frequencies and a second wave motion having a second one of the plurality of frequencies. The information acquisition section 106 acquires first information about the incoming direction of the first wave motion and second information about the incoming direction of the second wave motion. The determination section 108 determines the direction of the target 2, based on at least the first information and the second information.

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First Claim