【摘 要】
：
本文提出了一种新的相位重现或信号恢复的迭代方法。在假定系统的传递函数的相位(或信号的傅里叶交换的相位)为非负或非正,系统的脉冲响应或时域信号的支集为有限的条件下,以
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本文提出了一种新的相位重现或信号恢复的迭代方法。在假定系统的传递函数的相位(或信号的傅里叶交换的相位)为非负或非正,系统的脉冲响应或时域信号的支集为有限的条件下,以任意线性相位作为初始估计,借助于FFT算法从已知振幅谱反复迭代得到了满意的相位重现和信号恢复。讨论了控制收敛速度的方法以及本方法在任意形状的轴对称压电接收器相位重现中的应用。
In this paper, a new iterative method of phase reconstruction or signal restoration is proposed. Assuming that the system’s transfer function phase (or the Fourier transform phase of the signal) is non-negative or non-positive and the impulse response or time-domain signal of the system is limited, an arbitrary linear phase is taken as the initial estimate , With the help of FFT algorithm iterative iteration from the known amplitude spectrum to obtain a satisfactory phase reconstruction and signal recovery. The method of controlling the convergence speed and the application of this method to the phase reconstruction of an axisymmetric piezo-electric receiver of arbitrary shape are discussed.
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