This course provides the basic principles of system identification and structural control. In order to bridge the gap that the civil engineering students have with regards to the interdisciplinary aspects of this course, principles of signals, sensors, data acquisition and filtering, complex plane representation of system dynamics, and relationship between different transformation for information mapping between time and frequency domains, and processing of random signals are covered in detail. Analytical and experimental modal analysis topics are included, which not only provide the students with a system identification tool but also enable them to handle the dynamics of complex structures with non-proportional damping.