DESCRIZIONE
A tracking device (10) is provided, which may include a correction target area setting module (121) configured to set an area in which an unnecessary echo tends to be generated based on a structure or behavior of a ship, as a correction target area, a correction target echo extracting module (122) configured to extract a target object echo (ED-ED8) within the correction target area from a plurality of detected target object echoes (ED1-ED8), as a correction target echo, a scoring module (123) configured to score a matching level between previous echo information on a target object echo (ED0) and detected echo information on each of the target object echoes (ED1-ED8), based on the previous echo information, the detected echo information and the extraction result, and a determining module (124) configured to determine a target object echo (ED1) as a current tracking target by using the scored result. [Image Omitted]