This article suggests a method of amplitude adaptive nonlinear suppression of non-Gaussian cluter in the coherent band pass of the receiver, which retains its effectiveness in any distribution of the clutter envelope and in any signal-to-noise ratio. At the same time, for “low level” signals, as compared to clutter, the algorithms that implement this method are not inferior to known asymptotically optimal algorithms, and the proposed algorithms do not introduce losses for “high level” signals. The proposed method also ensures a stable probability of false alarm. A description of this method is given, as well as a study of its effectiveness by modeling in the MathCAD environment in the task of detecting a deterministic signal against a background of non-Gaussian clutter in the form of reflections from the sea surface. When modeling such clutter, the K-distribution is used and the internal noise of the receiver is taken into account. Research shows that the proposed method really has these advantages.