The precision of count and speed test of inductive loop vehicle detector relates the veracity of traffic flux statistical result, which is verifiable key item.
环形线圈车辆检测器的计数精度和测速精度关系到交通流量统计结果的准确性，是计量检定的关键项目。
In this paper the statistical properties of the average adaptive threshold detection with coherent detector are discussed.
本文分析了相干检波平均值自适应门限检测器的统计特性。
The statistical fluctuation phenomenon will appear when the radiation source is relatively weak or the sensitivity of the detector is low.
当射线源比较弱、探测器探测效率低时，常常显示出统计起伏的现象。
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