An object detection and tracking support system includes a setting unit, a transmission level obtaining unit, a propagation loss function estimating unit that, based on various information relating to a transmitter and a receiver stored in the setting unit, calculates the propagation loss as a propagation loss function expressed as a function of the distance and the direction viewed from the receiver, a target strength obtaining unit that, in regard to an object of object information stored in the setting unit, extracts a target strength of the object from an external database; and a detection signal level function estimating unit that, based on transmission level information obtained by the transmission level obtaining unit, a propagation loss function calculated by the propagation loss coefficient estimating unit, and a target strength extracted by the target strength obtaining unit, determines a detection signal level function, for display on an external display unit.