square signal meaning in English
矩形波信号
矩形信号
Examples
- Detection of weak square signal in strong noise with a chaotic oscillator
用混沌振子检测淹没在强背景噪声中的方波信号 - The potential applications of amr include both civil and military communication , especially non - cooperative communications and communication confrontation , such as identifying signals , supervising signals , distinguishing interference , electronic confrontation , analyzing military threat , etc . on the basis of our analysis to the existing research on feature abstraction , the related feature abstraction methods are optimized in this paper , resulting several effective methods such as the feature abstraction based on transformation domain , stepped voltage level analysis , normalized carrier - free spectral energy analysis , squared signal and fourth powered signal analysis , etc . both the decision theory based on recognition algorithms and the artificial neural network ( ann ) based on recognition algorithms is analyzed , and the former is selected as it is more appropriate for this research
调制类型的自动识别广泛应用于民用通信与军用通信，尤其是对于非合作性通信、通信对抗，比如：信号确认、信号监控、干扰辨识、电子对抗、软件无线电、电子救援、通信对抗、军事威胁分析等。本论文在分析现有研究的基础上，借鉴了已有的特征提取方法，对相关调制类型特征提取方法进行了优化，使用了一些有效的方法，如基于变换域特征提取方法、梯层电平分析方法、剔除载波后的归一化频域能量分析方法、信号平方后的频谱分析方法、信号四次方后的频谱分析方法等。通过对基于决策理论和基于人工神经网络两种识别算法进行分析，本论文选择了较适合的基于决策理论的识别算法。