摘要
通过对二进制幅度键控、频移键控、相移键控二种数字调制方式信号频谱和误码率的分析比较，探讨了移频轨道电路叠加点式信息的数字调制方式。
This paper analyzes the spectrum and the error rate of the binary amplitude shiftkeying,the binary frequency shift keying and the binary phase shift keying,And then,thispaper analyzes the modulation type of digital signal transmitted by the frequency shift trackcircuit.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
1995年第S2期31-35,共5页
Journal of the China Railway Society
关键词
轨道电路
数字调制
列车超速防护
track circuit
digital modulation
train overspeed protection
