摘要
基于光纤水声传感器,提出了一种水声信号能量阈值与强线谱时频特征相结合进行内河航道航运流量监测的方法,解决了内河航运流量较大时,特别是多艘船只同时通过时的船只计数难题.时长45min的现场声压数据的处理结果验证了该方法的有效性.
Based on a set of optic fiber sensors, an algorithm was proposed to count ships in inland waterways by combining the threshold of sound energy and the time-frequency characteristics of strong line spectrums, which solved the counting problem emerged when a number of ships went through the monitored water area in parallel. The processing results of a piece of 45 minutes long sound pressure data proved the effectiveness of this algorithm.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2014年第10期1428-1433,共6页
Journal of Shanghai Jiaotong University
基金
上海教委科研创新项目(12Z112030001)
国家自然科学基金(61201058)
教育部博士点基金(20090073120033)
国家科技重大专项(2011ZX03001-00703)
上海市教委创新项目(13ZZ019)
上海市科学技术委员会(11511501400)资助
关键词
内河航道
船只流量监测
能量阈值
强线谱时频特征
inland waterways
vessel traffic monitoring
threshold of sound energy
strong line spectrum time-frequency characteristics
