The paper presents an analysis of methods and systems for detecting and locating lightning strikes, with an emphasis on LINET and NLDN networks. The functioning of sensors used by the aforementioned networks for detecting lightning strikes is described, as well as the method of distinguishing between cloud-to-cloud and ground-to-ground strikes. A brief comparison of the aforementioned systems/networks for detecting and monitoring lightning strikes is made, as well as their historical development, with a special emphasis on the NLDN network. The paper also provides a brief theoretical background to the statistical expression of lightning parameters (amplitude, front duration, crest duration, charge, etc.).