FREEWAY INCIDENT DETECTION RESEARCH BASED ON WAVELET ANALYSIS
会议名称：《第一届交通运输工程国际学术会议》
会议日期：2007年
学科分类：03[法学] 08[工学] 0838[工学-公安技术] 0306[法学-公安学]
关 键 词：freeway incident detection wavelet analysis singular point catastrophe improved algorithm
摘 要：The paper analyses the characteristic of traffic flow on freeway. Then a freeway incident detection method based on observing the amplitude curve of wavelet coefficient is advanced, whose key model is fitted between flow and time-occupy ratio in the form of bifurcation equation in order to magnify the characteristic of singular point by wavelet transform, with an improved Newto-Core Numerical Integral Method concerning the characteristic of Marr wavelet function as its key. At the end of this paper, a series of traffic flow data surveyed on Guangzhou-Foshan Freeway is used to testify the superiority of this new method.