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Classification of Driving Direction in Traffic Surveillance Using Magnetometers

机译：磁力计在交通监控中的行驶方向分类

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摘要

Traffic monitoring using low-cost two-axis magnetometers is considered. Although detection of metallic vehicles is rather easy, detecting the driving direction is more challenging. We propose a simple algorithm based on a nonlinear transformation of the measurements, which is simple to implement in embedded hardware. A theoretical justification is provided, and the statistical properties of the test statistic are presented in closed form. The method is compared with the standard likelihood ratio test on both simulated data and real data from field tests, where very high detection rates are reported, despite the presence of sensor saturation, measurement noise, and near-field effects of the magnetic field.
机译：考虑使用低成本的两轴磁力计进行交通监控。尽管检测金属车辆相当容易，但是检测行驶方向更具挑战性。我们提出了一种基于测量值非线性转换的简单算法，该算法易于在嵌入式硬件中实现。提供了理论依据，并以封闭形式提供了检验统计量的统计属性。将该方法与来自现场测试的模拟数据和真实数据的标准似然比测试进行了比较，尽管存在传感器饱和，测量噪声和磁场的近场效应，但报告的检测率非常高。 / p>

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