A system for monitoring a compressor during a load change, the system comprising: a sensor system for sensing a blade passing signal of a passing compressor blade; and a blade monitoring system connected to the sensor system, wherein the blade monitoring system is configured to: obtain the BPS and extract a time-of-arrival signal from the BPS indicating a time-of-arrival of the compressor blade; calculate a time-of-arrival deviation signal by comparing the TOA signal with an expected time-of-arrival signal for the compressor blade; extract in response to the load change on the compressor a dynamic component of the TOA deviation signal; calculate, using the dynamic component, at least one of: a natural frequency of the compressor blade during the load change, an overshoot for the compressor blade during the load change, a rise time of the compressor blade during the load change, a damping factor of the compressor blade during the load change, or a settling time of the compressor blade after the load change; and determine whether the compressor blade is damaged based upon the at least one of: the natural frequency, the overshoot, the rise time, the damping factor, or the settling time. a sensor system for sensing a blade passing signal of a passing compressor blade; and a blade monitoring system connected to the sensor system, wherein the blade monitoring system is configured to: obtain the BPS and extract a time-of-arrival signal from the BPS indicating a time-of-arrival of the compressor blade; calculate a time-of-arrival deviation signal by comparing the TOA signal with an expected time-of-arrival signal for the compressor blade; extract in response to the load change on the compressor a dynamic component of the TOA deviation signal; calculate, using the dynamic component, at least one of: a natural frequency of the compressor blade during the load change, an overshoot for the compressor blade during the load change, a rise time of the compressor blade during the load change, a damping factor of the compressor blade during the load change, or a settling time of the compressor blade after the load change; and determine whether the compressor blade is damaged based upon the at least one of: the natural frequency, the overshoot, the rise time, the damping factor, or the settling time. obtain the BPS and extract a time-of-arrival signal from the BPS indicating a time-of-arrival of the compressor blade; calculate a time-of-arrival deviation signal by comparing the TOA signal with an expected time-of-arrival signal for the compressor blade; extract in response to the load change on the compressor a dynamic component of the TOA deviation signal; calculate, using the dynamic component, at least one of: a natural frequency of the compressor blade during the load change, an overshoot for the compressor blade during the load change, a rise time of the compressor blade during the load change, a damping factor of the compressor blade during the load change, or a settling time of the compressor blade after the load change; and determine whether the compressor blade is damaged based upon the at least one of: the natural frequency, the overshoot, the rise time, the damping factor, or the settling time.