The application relates to a fast time-domain frequency-domain anti-
clutter waveform generation method, device, equipment and medium, a frequency-domain anti-
clutter optimization problem model is established by taking the maximum frequency-domain
signal-to-
clutter ratio as a criterion, considering a waveform constant module constraint and a weighted integrated sidelobe level constraint, a
penalty coefficient is introduced, the problem is converted into an
optimization problem of minimizing clutter energy and a weighted integrated sidelobe level, a weight vector is introduced to convert the constraint
optimization problem into an approximately equivalent problem model, the problem model is introduced into a complex circle flow space to convert the constraint optimization problem in the Euclidean space into an
unconstrained optimization problem in the flow space, then, a Euclidean gradient and a Hessian matrix of the
unconstrained optimization problem are calculated, based on a Riemannian gradient and a Riemannian Hessian matrix obtained through projection, the
unconstrained optimization problem is subjected to a
confidence interval descent in the Riemannian complex circle flow space, an iterative point is updated until convergence, and finally, a
radar transmitting waveform is output. The method generates a
radar transmitting waveform based on the difference between a target and clutter in the
frequency domain, and can effectively suppress the clutter.