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相关概念视频

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Reconstruction of Signal using Interpolation

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Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
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In any LTI (Linear Time-Invariant) system, the convolution of two signals is denoted using a convolution operator, assuming all initial conditions are zero. The convolution integral can be divided into two parts: the zero-input or natural response and the zero-state or forced response, with t0 indicating the initial time.
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适用于FPGA的交叉条纹读取的交叉卷积中心算法

Xiao-Yun Zuo1,2, Jin-Kun Zheng1, Jin-Yao Duan1,2

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这项研究引入了交叉条带阳极的快速信号读取方法,使用了插入卷积中心算法. 这种新方法可以提高事件处理速度,同时保持高空间分辨率以提高探测器性能.

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科学领域:

  • 核仪器设备
  • 信号处理
  • 粒子检测

背景情况:

  • 交叉条带阳极对于各种科学应用中的位置敏感检测至关重要.
  • 现有的读取方法通常在平衡速度和空间分辨率方面面临限制.
  • 有效的信号处理是最大限度地提高高能物理和医学成像数据采集速度的关键.

研究的目的:

  • 开发和验证交叉条带阳极的新信号读取方法.
  • 提高交叉带阳极系统的事件处理速度.
  • 保持高空间分辨率的性能,同时提高读取速度.

主要方法:

  • 实现信号读取的插入卷积中心算法.
  • 通过分组和总和比较来确定事件通道.
  • 通过电子云的零点插值计算中心位置.
  • 使用 MATLAB 和 Vivado 的联合模拟来验证系统.

主要成果:

  • 拟议的算法显著提高了交叉条带阳极信号的读出速度.
  • 通过新的读取方法保持高分辨率性能.
  • 实验结果显示空间分辨率为22.63 lp/mm.
  • 在这种分辨率下,事件处理速率超过20 MHz.

结论:

  • 对交叉条带阳极信号的读取提供了一个优越的解决方案.
  • 这种方法有效地解决了探测器系统中的速度和分辨率之间的权衡.
  • 验证的性能表明,对于需要快速,高分辨率的位置传感的应用,有了显著的进步.