The usage of drones is increasingly spreading into new fields application, ranging from agriculture to security. One these applications sound recording in areas difficult access. challenge that arises when using for this purpose the recorded sources must be separated noise produced by drone. intensity emitted drone depends on several factors such as engine power, propeller rotation speed, or ty...

One of the major challenges diagnosing rotor symmetry faults in induction machines (IMs) is severe modulation fault and supply frequency components. In particular, existing techniques are not able to identify components case low slips. this article, problem tackled by proposing a novel approach. First, new use singular spectrum analysis (SSA), as powerful analyzer, introduced for detection. Our...

Sometimes, it is of interest to single out the fluctuations associated a given frequency. We propose new variant SSA, Circulant SSA (CiSSA), that allows extract signal any frequency specified beforehand. This novelty when compared with other procedures need identify ex-post frequencies extracted signals. prove CiSSA asymptotically equivalent these alternative although advantage avoiding subsequ...