城市环境下的高阶伪随机电磁信号有效信息提取——以济南市某轨道交通工程区为例
马振波, 周长宇, 阮进平, 张文艳

Effective information extraction from high-order pseudo-random electromagnetic signals in urban environments:A case study of a rail transit engineering area in Jinan City, China
MA Zhen-Bo, ZHOU Chang-Yu, RUAN Jin-Ping, ZHANG Wen-Yan
图9 GY3-1720实测数据波形(a)及频谱(b)
Fig.9 Waveform(a) and spectrum(b) of measured data at GY3-1720