DESCRIZIONE
This disclosure provides a detection apparatus (1, 1c, Id, 1e) that includes a transducer (2, 2a) configured to transmit a transmission wave, a first echo intensity calculator (12, 12e) configured to calculate a first echo intensity of a first reception signal generated from a reception wave resulting from a reflection of said transmission wave on a reflection object, a second echo intensity calculator (13, 13e) configured to calculate a second echo intensity of a second reception signal generated from a reception wave resulting from a reflection of said transmission wave on said reflection object, a signal duration of said second reception signal being shorter than that of said first reception signal, and a target detector (20) configured to detect a target from a relative intensity comparison of said first echo intensity and said second echo intensity. [Image Omitted]