This module can be used to analyze structures under stochastic or ambient excitation (e. g. wind, traffic), where a measurable excitation is complicated or impossible, e.g. structures are too small or too large. Operational Modal Analysis (OMA) is also known as ambient modal analysis, ambient vibration testing or output-only modal analysis. It uses the dynamic response of a structure on-site under its environmental conditions to determine its modal parameters (natural frequencies, mode shapes and damping).
Various time-based algorithms are available for the extraction of the modal parameters. The evaluation of the vibration analysis is possible without expert knowledge, since suitable evaluation parameters are automatically determined from the input data.