Sea area theoretical minimum tidal surface calculation method, system, equipment and medium

• Main Authors: WANG NAN, TAN FUHONG, DING JING, LI SHUANG, LIU YANG, ZHANG YU, YU RUI, QIN LIANGJUN, HE JUN, WU HUI
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR; TESTING

The invention discloses a method, a system and equipment for calculating a theoretical minimum tidal surface of a sea area and a medium. The method comprises the following steps: acquiring tide level observation data within a preset time period; performing harmonic analysis on the tide level observation data through a tide harmonic analysis method to obtain harmonic constants of thirteen partial tides; the thirteen partial tides comprise astronomical partial tides, shallow-water partial tides and long-period partial tides; respectively calculating a high-frequency partial tide height minimum tidal surface of the astronomical partial tide and the shallow partial tide and a low-frequency partial tide height minimum tidal surface of the long-period partial tide; and determining a theoretical minimum tidal surface according to the sum of the high-frequency partial tide height minimum tidal surface and the low-frequency partial tide height minimum tidal surface. According to the method, the minimum tide absolute v