居民出行调查中的抽样技术研究

居民出行调查的数据是城市交通规划的基础,它的准确度直接影响着规划的质量。恰当的调查方法和抽样率对保证数据精度和节省费用至关重要。目前,我国绝大多数城市在进行居民出行调查时,根据国外经验来确定抽样率,理论依据不充分,无法估计调查数据的精度和预测数据的准确性。运用抽样技术理论,首先对居民出行调查中用的抽样方法和抽样率的计算做理论上的阐述,然后对常用的抽样率计算公式进行推导,并讨论其他相关问题,最后给出计算实例。

Study on Sampling Techniques of Trip Survey

The data of trip survey is the basis of urban traffic planning and its accuracy is crucial.The proper survey method and sampling rate are important for the survey data precision.The sampling rate is often based on the foreign experiences in China at present.The precision of survey data and the accuracy of the forecasting data can't be estimated for the absence of theoretic basis.The theories are given for sampling methods and the sampling rate calculation and the formulae are deduced by applying the sampling theory.Some other aspects concerned are discussed and the applications are explicit.The example illustrates the applications.