【摘要】 通过对煤矿井下电磁干扰测试和分析,发现井下电磁干扰主要有白噪声、脉冲干扰及窄带干扰。提出采用扩频通信、信道采用交织编码结合前向编码以及自适应傅立叶变换抑制窄带干扰等技术来抑制电磁对煤矿井下漏泄通信系统的干扰。更多还原

【Abstract】 The electromagnetic interference(EMC) in underground coal mine was measured and analyzed.And it was found that the EMC mainly includes white noise,pulse interference and narrowband interference.In this paper,a anti-interference method for leakage communication system in coal mine underground is put forward,which uses such techniques as spread spectrum communication,interweaved coding combined with forward coding for channel and self-adaptive Fourier transform to suppress narrowband interference更多还原