Wave impedance inversion method based on improved damped least square method

A wave impedance inversion method based on an improved damped least square method belongs to the field of geophysical inversion, and particularly relates to wave impedance inversion technology in oiland gas geophysical exploration. The invention aims to provide an improved wave impedance inversion method, which is used to establish a wave impedance inversion objective function in the sense of least squares and reduce the calculation cost of the Jacobian matrix in the traditional least square method, and can solve the non-positive singular problems of the Jacobian matrix to optimize the iterative method of damping coefficients, so that the algorithm has better stability and global convergence, and the inversion results are more reliable. The implementation process comprises the following steps of (1) constructing an inversion objective function according to the convolution model and the sparsely constrained pulse inversion theory; (2) establishing an initial model based on the log dataand horizon Information;