Ocean duct inversion from radar clutter using variation adjoint and regularization method I. Theoretical part
变分伴随正则化方法从雷达回波反演海洋波导 I.理论推导部分

Since the traditional anti-statistical algorithms in the inversion of refractivity from radar clutter (RFC) need too much calculation, a new physical algorithm (variation adjoint combined with the regularization method) is proposed instead . In the variation adjoint method, the tangent model, adjoint equations and accompanying boundary conditions, the solving expression of adjoint equations, and the mathematical functional expression of the gradient were derived respectively, and the problem of how to coord...