Abstract: Firstly, metrological methods are put forward to solve the problem of lack of verification method for environmental noise monitoring terminal (ENMT). Frequency weighting, including using acoustic signal and electrical signal, is highlighted to introduce. Secondly, the parameters of the tube which is used to verify the ENMT online is calculated. Meanwhile, the estimated measurement uncertainty is also calculated to see if it meets the requirement of related standard for ENMT online metrology. Last but not the least, the feasibility of online metrological method is validated, by performing experiments and related measurement uncertainty assessment.

摘要： 针对目前环境噪声监测终端在线计量较难实施的现状，研究并提出相应的在线计量方法，着重介绍频率计权参数的在线计量方法，其包括声信号与电信号两种检定方式。通过理论分析计算现场检定用声场装置的设计参数，并通过理论估算频率计权测量不确定度是否满足现场检定的要求；最后通过实验对某监测终端声信号频率计权测量不确定度进行评定，验证了现场检定的可行性。

关键词: 声学, 环境噪声监测终端, 频率计权, 在线计量, 测量不确定度