摘要
恰当的统计间隔时间是调查和有效统计船舶交通流的基础，文中基于随机过程理论和数理统计理论，提出统计间隔时间选定方法．结合京杭运河船闸节点的详细运行资料，通过对比不同的统计间隔时间下的计数分布与间隔时间分布，发现合理的统计间隔时间应选在40～50min之间，船闸交通流统计合理的最小间隔时间约为45min．
Appropriate interval time is the basis for valid investigation and statistics of ship traffic. This paper applies stochastic theory and statistics to determine the measurement interval for the ship traffic flow. The detailed ship data at Shiqiao lock are used in the analysis. The reasonable measurement interval is between 40 and 50 minutes to satisfy the coherence of the two distributions of a stochastic process. It concludes that the minimum interval is around 45 minutes checked with stability requirement.
出处
《武汉理工大学学报（交通科学与工程版）》
2007年第4期573-576,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
江苏交通科学研究计划项目(批准号:02Y017)
西部交通科技项目(批准号:XBKJSXCZZT1YJDG0501)资助
关键词
水运
船闸交通
间隔时间
waterway engineering
ship traffic
measurement interval
