RECEIVING STATION, AND SIGNAL TRANSMITTING/RECEIVING SYSTEM USING IT

摘要

PROBLEM TO BE SOLVED: To provide a receiving station that determines a state of a signal-missing portion and improves estimation accuracy of a radio wave arrival angle, and then incorporates a new radio wave propagation model for correcting an underwater process constituting a radio wave propagation path; and a signal transmitting/receiving system using the station. SOLUTION: The receiving station includes means 1 for capturing a receiving beam pattern in a condition with no shielding material as a model beam pattern in advance; means 2 for capturing measured data to search a maximum value; means 3 for specifying an estimated beam pattern of a parabola including the maximum value searched; means 4 for obtaining a difference between closed received data in the order of nearer received data to the end of the parabola to estimate a local trend; means 5 for specifying a received data in the normal range of the estimated beam pattern to a candidate; means 6 for assuming received data closed to the estimated beam pattern as a sample for determining the majority of estimated population from among extracted candidates to produce the most possible function; and means 7 for extracting the vertex of the beam pattern function as the radio wave arrival angle. COPYRIGHT: (C)2007,JPO&INPIT