Patent ID: 6996371

Claim:
A device for aiding the analysis of signals containing a symbols-based digital modulation, said device comprising: a signal memory for storing a complex digital signal (z(t)), representative in amplitude and phase of a captured signal, over a chosen duration, and processing means devised to search within the complex signal for the properties relating to its carrier frequency and to a modulation of the carrier frequency as a function of a chosen modulation model, wherein the processing means comprise: means for determining an estimate of the tempo (1/T) of the modulation, projection means devised to calculate the components (zp(t)) of the complex signal in a function basis, said function basis being parameterized according to said tempo (1/T) of the modulation, and calculation means operating on these components, so as to determine at least one estimate relating to at least one property of the complex signal, within the group of properties comprising the elementary pulse shape (g(t)) of the complex signal, the string of symbols (a(k)) of the complex signal and the carrier (f0) of the complex signal.