摘要
通过对现有交通流量检测方法和汽车噪声信号特性的分析,提出一种基于麦克风阵列的交通量声频检测方法。对麦克风阵列所采集的车辆行驶时的声音信号,运用窄带阵列信号处理的方法进行离线处理,并将车辆数转化为阵列信号中信号源的个数的估计,最后通过试验论证该方法的可行性。
In this paper, a new method of traffic volume detection with microphone array is presented. And the condition of current traffic volume detection methods and vehicle noise signal is also analyzed. The noise signal of passing vehicles is gathered with microphone array, and processed off line with the method of narrow-band array signal processing, then the estimation of the number of vehicles can be transformed into the estimation of the number of signal source in array signal processing. At last, we prove that the method is feasible by experiment.
出处
《公路交通科技》
CAS
CSCD
北大核心
2004年第10期89-91,120,共4页
Journal of Highway and Transportation Research and Development
关键词
交通流量检测
阵列信号处理
AIC准则
Traffic volume detection
Array signal processing
AIC criterion
