摘要
介绍了声表面波可程序 MSK调制解调组件设计及工作原理 ,该产品用于位置报告系统 ,完成对 MSK信号的扩频调制解调以及对信息的差分相干解调 ,不需提取载波及恢复时钟等处理 ,提高了系统抗干扰能力和实时处理速度。同时由于扩频码序列随时可变 ,大大提高了系统保密性能。与其他技术相比 ,具有独特的优势 ,有很好的应用前景。
A programmable SAW MSK modulation and demodulation module applied in position report system is presented in this paper.Completed by spread spectrum(SS) modulation and demodulation for MSK signal and differential coherent data demodulation for the position,there would be no need for carrier pick up and clock recovering,which will greatly improve the anti interference ability and real time processing rate of the system.Since the SS code can vary at any time,the security of the system will also be improved.Having such unique superiority over other technology,the module deserves good application potential.
出处
《压电与声光》
CSCD
北大核心
2002年第3期175-177,共3页
Piezoelectrics & Acoustooptics
关键词
直接序列扩频
差分相干解调
MSK信号
direct sequence spread spectrum
differentially coherent data demodulation
MSK signal
