Measurement method and measurement system

A measurement system, comprising a signal generating device, a signal receiving device, at least a first signal path and a second signal path, a modification module, and a signal analysis module,

• said signal generating device and said signal receiving device being connected via both of the first signal path and the second signal path in a signal transmitting manner,
• said signal generating device being configured to provide a test signal to the first signal path and to the second signal path within a predefined time interval, thereby obtaining a first signal and a second signal, respectively,
• said modification module being configured to consecutively modify at least one of a phase and an amplitude of the first signal and of the second signal, thereby obtaining a first modified signal and a second modified signal, respectively,
• said signal receiving device comprising said modification module or being configured to receive the first signal, the first modified signal, the second signal, and the second modified signal,
• said signal analysis module being configured to apply a first window at least to the first signal, thereby obtaining a first set of measurement data being associated with at least the first signal,
• said signal analysis module further being configured to apply a second window at least to the second signal, thereby obtaining a second set of measurement data being associated with at least the second signal, and
• said signal analysis module being configured to determine a response function difference between the signal paths based on said first set of measurement data and said second set of measurement data.