TSUNAMI OBSERVATION DEVICE, TSUNAMI OBSERVATION SYSTEM, AND TSUNAMI OBSERVATION METHOD

摘要

[Problem] To accurately observe a tsunami without using a reference station. [Solution] A tsunami observation device (10) is provided with the following: a plurality of GNSS antennas (211, 212); a sensor unit (20); an attitude-angle calculation unit (30); and an observation unit (40). The plurality of GNSS antennas (211, 212) receive a plurality of GNSS signals respectively. The sensor unit (20) maintains the plurality of GNSS antennas (211, 212) in a prescribed positional relationship. The attitude-angle calculation unit (30) calculates the attitude angle of the sensor unit (20) using the carrier wave phase of a plurality of GNSS signals. The observation unit (40) observes a tsunami using the temporal change of the attitude angle.