摘要
脉冲超宽带信号的单脉冲形式能够影响到传输信号的功率谱密度,单脉冲形式的选择应遵循频谱利用率高,抑制干扰灵活,脉冲产生容易等原则。对于信息数据的调制主要有基于幅度的调制(PAM)和基于时延相位的调制(PPM),主要的多址技术有跳时(TH)扩频调制、直接序列(DS)扩频调制,最主要的两种基本调制方式是TH-PPM和DS-PAM。采用高斯脉冲,将脉冲波形调制,跳时技术,直接扩频技术组合在一起,组成一种新的组合调制方式DSTH-PSM调制,使一种信号具有3个属性,降低了信号捕获时判决的难度,增加了系统的安全性。
The single pulse mode of IR‐UWB can affect the single pulse mode to the power spectral density of the transmitted signal , the single pulse mode selection should follow the principles that high spectrum efficiently , interference suppression flexible pulse generator easy .For information on data modulation are mainly based on the amplitude modulation (PAM ) and based on delayed phase modulation (PPM ) , when the main multiple access technologies hop (TH) spread spectrum modulation ,direct sequence (DS) spread spectrum modulation ,most the main two basic modulation is TH‐PPM and DS‐PAM .Gaussian pulse ,the pulse waveform modulation ,time‐hopping technology ,direct spread spectrum technology together to form a new hybrid modulation DS‐T H‐PSM modulation .
作者
孟祥利
侯孝民
廉昕
Meng Xiangli Hou Xiaomin Lian Xin(Equipment Academy of PLA, Beijing 101416, China)
出处
《电子测量技术》
2016年第9期40-44,共5页
Electronic Measurement Technology
关键词
单脉冲形式
信息调制
多址方式
组合调制
single pulse mode
information modulation
multiple access
hybrid modulation