SIGNAL IDENTIFYING APPARATUS, SIGNAL IDENTIFYING METHOD, AND RADAR APPARATUS

摘要

[Problem] For conventional radio apparatuses, when a plurality of targets are close to one another or in a situation of multiple sea clutters, the echo signals from the plurality of reflecting objects are unified, with the result that the plurality of reflecting objects may be erroneously detected as a single target. Especially, in an ARPA apparatus, if such an erroneous detection occurs, there may occur phenomenon of "transfer" in which a tracked object transfers to another reflecting object or phenomenon of "loss" in which the tracked object is lost. [Solution] A signal identifying apparatus (10) comprises: a transmitting/receiving unit (2) that repeats the transmission/reception of electromagnetic waves; a phase variation amount calculating unit (412) that calculates, on the basis of echo signals from a plurality of points having approximately equal distances and different azimuths from the transmitting/receiving unit (2), the phase variation amount between the echo signals; and a unifying unit (42) that groups, on the basis of the phase variation amount, a plurality of nearby points as the same single reflecting object. In this way, there is provided a signal identifying apparatus (10) that can solve the foregoing problem and that can detect targets with higher precisions than the conventional art.