Résumé : The basic principles of stroboscopic detection of nuclear resonant forward-scattered synchrotron radiation are discussed. It is explained how the experiment can be configured in such a way that energy-resolved spectra with a straightforward interpretation are obtained. The theory is supported by a set of experimental spectra on the single-line compound potassium ferrocyanide trihydrate. Further, it is shown that a stroboscopic measurement is equivalent to an interferometer experiment. Finally, a comparison of stroboscopic detection and other Mössbauer techniques is given.