Classic Tidal Analysis Methods

Classic tidal analysis methods involve separating various tidal constituents (such as lunar tidal systems, solar tidal systems, etc.) from measured tidal level records before performing harmonic analysis. Algorithmically, this process calculates the amplitude and phase angle for each tidal constituent, followed by astronomical correction to obtain harmonic constants. Implementation typically utilizes Fourier transform techniques and least squares fitting to compute tidal constituents. This harmonic analysis enables prediction of tidal variations over specific periods and characterization of regional tidal properties.

Virtual Signal Generator

A GUI-based tool that generates (1) periodic functions (including sine, triangular, sawtooth, and square waves) with configurable amplitude, frequency, and phase parameters, (2) squared pulse sequences with adjustable amplitude, frequency, phase, and duty cycle, (3) dual-parameter exponential functions, (4) Gaussian curves with varying ranges, standard deviations, and means, and (5) Gaussian noise with different amplitudes. The implementation utilizes mathematical waveform generation algorithms with real-time parameter modulation capabilities. Users can add offsets or Gaussian noise to any of the first four functions and perform signal arithmetic operations (addition/multiplication) with predefined signals through intuitive GUI controls.