Fast and relaxed vector fitting: an application to a fighter jet aircraft

The Fast and Relaxed Vector Fitting (FRVF) is a dynamic System Identification technique for inputoutput measurement, recently proposed for applications in the fields of Aerospace, Civil, and Mechanical Engineering. Here, its capabilities are validated, for the first time, on experimental data from Ground Vibration Testing (GVT) under controlled laboratory conditions. More specifically, the case study of interest is a real-size, real-life decommissioned F-16 fighter jet aircraft, widely studied in the recent literature. The results of these tests are benchmarked against the identifications available in the published literature, showing very good comparability with different kinds of excitation.