Zhengling Yang

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In order to detect expressway traffic incidents veritably, the probabilistic identifying results are suggested to demonstrate the traffic jam/congestion detection by traffic flow. First, the noise series in a traffic flow is decomposed by wavelet denoising and by second kind Fourier analysis denoising respectively. Second, hypothesis testing by chi-squared(More)
Both nonlinear theories and Fourier analysis predicate theoretically that low-order nonlinear transformation has three advantages. First, it can increase the signal-to-noise ratio of a complex time series that has a large fluctuation. Second, it can insulate negative effects of outliers or bad data. Last, it can improve the distinction between the signal(More)
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