摘要
为克服单一时域和频域移频信号解调时的缺点，实现移频信号的可靠、准确的解调，本文提出了一种基于Ｇａｂｏｒ变换的移频信号的解调方法，并进行了计算机仿真。仿真结果表明，采用Ｇａｂｏｒ变换可准确地解调出移频信号的上边频和下边频频率，与ＦＦＴ相结合，可实现移频信号的解调。
In order to overcome the disadvantage of frequency shift signal demodulation in time domain and frequency domain and realize the reliable, accurate demodulation of frequency shift signal, a frequency shift demodulation method based on Gabor transformation is proposed in this paper. By means of computer simulation, the upper frequency and down frequency of frequency shift signal are demodulated accurately by using Gabor transforming,and combining with FFT, the frequency shift signal demodulation can be realized .
出处
《铁道学报》
EI
CAS
CSCD
北大核心
1999年第4期34-36,共3页
Journal of the China Railway Society
基金
国家"863"科技计划项目
铁道部科技发展计划项目
