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11 GY3-1960潜在有效频率提取结果 (为方便观察,本图及后续同类图中提取前曲线对应左侧y轴,提取后曲线对应右侧y轴)

Fig.11 Potential effective frequencies extraction results of GY3-1960 (for ease of observation, original curve and extracted curve correspond to left and right y-axes respectively in this figure and subsequent similar figures)