It presents a new method of DOA estimation in time-frequency domain, via establishing the STFD matrix and combining the traditional methods of array.

通过构建空间时频分布矩阵，和传统的阵列信号处理方法相结合，从而得到一种新的时频域的波达方向估计方法。

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Tosional moments acting on diesel crankshaft were identified through a time domain method that uses impulse response matrix and the torsional vibration signal measured at a single point.

给出了使用柴油机输出端扭振响应识别曲轴所受转矩的脉冲响应方法。

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