求翻译：系统辨识在信号处理、通信和控制等领域里都有重要应用，其实质上是根据系统的输入和输出信号来估计或确定系统的特性以及系统的单位冲激响应或传递函数。图1是一个系统辨识问题的框图。是什么意思？

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Systems identified in the signal processing, communications and control - including in the areas of development and is an important applications is essentially based on the input and output signals to determine the estimated or system as well as the identities of the system unit shocks response or t

The system identification in domains and so on in signal processing, correspondence and control all has the important application, in its essence is estimates either the determination system characteristic as well as the system unit impulse response or the transfer function according to the system i

System identification in signal processing, communications and control have important applications in areas such as, which is essentially based on the input and output signals to estimate or determine characteristics of the system and that the system of unit impulse function or transfer function. Fi

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