adjoint.py 文件源码

def Envelope3(syn, obs, nt, dt, eps=0.):
    # envelope lag
    # (Yuan et al 2015, eqs B-2, B-5)
    esyn = abs(_analytic(syn))
    eobs = abs(_analytic(obs))

    erat = _np.zeros(nt)
    erat[1:-1] = (esyn[2:] - esyn[0:-2])/(2.*dt)
    erat[1:-1] /= esyn[1:-1]
    erat *= misfit.Envelope3(syn, obs, nt, dt)

    wadj = -erat*syn + _hilbert(erat*_hilbert(esyn))
    return wadj