FWI

This repo contains some notes and codes about full waveform inversion.

Here is a note about adjoint equation based on elastic wave equation and least square objective function.

Idea

• Using struct to describe velocity model, source and receiver information
• Wavefield data and recorded data should be designed for multi-frequency and multi-sources directly
• Input and output format should be vector. Corresponding to the discrete math form
• Function should be treated as functional operator

Unit

• Velocity: m/s
• Density: kg/m^3
• Sampling frequency: Fs (Hz)
• Time: t (s)