pulsed-envelope principle

例句：

1. 1. The pulse-envelope principle is a fundamental concept in digital signal processing.
   脉冲包络原理是数字信号处理的基本概念。
2. 2. In this paper, we will discuss the application of the pulse-envelope principle in image processing.
   在本文中，我们将讨论脉冲包络原理在图像处理中的应用。
3. 3. The pulse-envelope principle is used to detect and track moving objects in video surveillance systems.
   脉冲包络原理用于检测和跟踪视频监控系统中的移动物体。