基于功率谱密度筛选的高海拔区背景噪声快速成像技术
刘迪, 杨涛, 宋华东, 李广超, 毋光荣, 郭良春, 张锦想

A fast imaging technology for screening ambient noise in high-altitude areas based on power spectral density
LIU Di, YANG Tao, SONG Hua-Dong, LI Guang-Chao, WU Guang-Rong, GUO Liang-Chun, ZHANG Jin-Xiang
图6 第7点频率—相速度
Fig.6 Point 7 frequency-phase velocity