Fast and efficient implementations of Fourier’s analysis techniques for non-stationary signals have been desired recently, not only in civilian but also in military applications. The ability to work in a real-time regime with high dependability and reliability when wideband signals are processed is a challenging but highly desirable task (e.g. analysis of radar signals). This article delves into the real-time implementations of two variants of vertical synchrosqueezing (VSS). The ability to achieve real-time processing was enabled by leveraging Nvidia CUDA technology. Validation through real-life radar signal processing scenarios has confirmed the accuracy and efficiency of the proposed algorithms. To the authors’ knowledge, this is the first real-time implementation of VSS given in the literature.