In this paper, we first obtain the FRFT of the uniform impulse-train sampled signals, and based on it, we deduce sampling theorem and reconstruction formula for bandpass and lowpass signals with FRFT.
本文首先得到了均匀冲激串采样信号的FRFT，然后在此基础上导出了FRF T域上带通信号和低通信号的采样定理和重构公式。
Firstly, the theory of multi-channel derivative sampling is described and the compact perfect reconstruction condition is given.
首先阐明了多阶微分采样的原理，给出了更为简洁的完美重构条件。
By using the special reconstruction principle and the superiority in decreasing sampling frequency, the application of periodically nonuniform sampling in frequency selection is also presented.
介绍了用滤波器组重构多阶采样信号的原理，并且利用多阶采样特殊的重构原理以及在降低采样率上的优势，介绍了多阶采样在频率选择上的应用。
It is important to select suitable sampling space and projection data for reducing cost and improving the image reconstruction efficiency in convolution backprojection algorithm.
利用卷积反投影算法对图像进行重建时，要降低成本，提高成像效率，就必须选取合理的抽样间距和投影数。
The SNR of the parallel-collected images is relevant to the geometric shape and the position of the coil and is influenced by the reconstruction method and the sampling mode.
并行采集图像的SNR，不仅与线圈的几何形态和位置有关，还受重建方法及采样模式的影响。
Based on the studies of sampling planning and surface reconstruction, the reverse engineering system with non-contact measurement is developed.
在曲面数字化规划和曲面重构研究的基础上，开发了基于非接触测量的逆向工程系统。
In the process of the reconstruction, the filtering line, re-sampling, correction and back-projection are revised respectively according to the detector center excursion.
在重建过程中，根据探测器的中心偏移量，对滤波线方程、滤波前后的重排和校正以及反投影过程进行修正处理。
In the process of the reconstruction, the filtering line, re-sampling, correction and back-projection are revised respectively according to the detector center excursion.
在重建过程中，根据探测器的中心偏移量，对滤波线方程、滤波前后的重排和校正以及反投影过程进行修正处理。
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