DEWESoft ARTeMIS OMA v7.2.2.1
Operational Modal Analysis (OMA) is often used as an advantage when analyzing the structural dynamics of civil engineering structures, operating machinery, and other structures being difficult to excite in a controlled manner.
OMA only uses measured output response signals - no input excitation signals. When performing OMA the measured structures are brought to motion by natural loads that cannot easily be controlled and measured, such as wave loads (offshore structures), wind loads (buildings), traffic loads (bridges), or operating machine loads.