In the field of nuclear medical imaging, nuclear and particle physics electronics, precise time measurement is an important task. In this paper, we focused on a real-time interpolated timing algorithm based on waveform digitization, which can be integrated in a field-programmable gate array (FPGA) device. The basic principle of this algorithm is to calculate the pulse peak and the time point when the pulse crosses the threshold. We analyzed the factors that would influence the time precision, and conducted simulations to estimate the effect. After implementing the algorithm in the FPGA, tests were conducted with the results concording well with the simulation, and a time precision of around 3 ps is successfully achieved for the photomultiplier tubes (PMT)-like pulse digitized by 800 MSps 12-bit analog-to-digital converter (ADC).

中文翻译：

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基于波形数字化的实时插值授时算法研究与验证

在核医学成像、核和粒子物理电子学领域，精确时间测量是一项重要任务。在本文中，我们重点介绍了一种基于波形数字化的实时内插计时算法，该算法可以集成到现场可编程门阵列 (FPGA) 设备中。该算法的基本原理是计算脉冲峰值和脉冲越过阈值的时间点。我们分析了影响时间精度的因素，并进行了模拟来估计影响。该算法在FPGA中实现后进行测试，结果与仿真吻合良好，800 MSps 12位模拟数字化的类光电倍增管（PMT）脉冲成功达到3 ps左右的时间精度。数字转换器 (ADC)。