【摘要】 在杭州市现有区域环境噪声手工监测点位的基础上,结合地理分布,采用系统聚类法对2012年149个点位的数据样本分类、合并,将149个点位优化到26个,并用T检验法验证数据可靠性。优化前后各城区的点位分布比例相差不大,等效声级绝对误差在1.0 d B(A)内,相对误差不超过±5%。经过2013年和2014年数据验证,确定优化后的点位能体现声环境功能区的代表性。更多还原

【Abstract】 Base on the manual monitoring sites of regional environmental noise in Hangzhou,149 original monitoring sites were optimized to 26 by the hierarchical cluster analysis,geographic distribution,and T test for data reliability. There were slight difference in site distribution between before and after optimizing. The absolute error of Leq was less than 1. 0 d B( A) and the relative error was within ± 5%. Verified by the monitoring data from 2013 to 2014,the optimized sites could be representatives of the functional regions for sound environment.更多还原