在传统适应性整群抽样的基础上,提出PPS适应性整群抽样,即采用PPS方法获取初次样本单元,然后对初次样本单元进行样本外推得到聚集网和最终样本。首先给出PPS适应性整群抽样设计,然后对该抽样机制下总体单元入样概率进行推导,构造得到了修正的HT统计量,并通过模拟研究揭示了估计量的良好性质。
We propose PPS adaptive cluster sampling based on the tradition,that is using PPS sampling for the first sample units then obtaining network and final sample through the process of extrapolation. This paper designs its sampling mechanism,analyses the properties of the corresponding sampling inclusive probability,gives the modified HT estimator,and reveals its good property by simulation.