地形变化调查统计方法的研究

A Research into the Statistic Methods of the changes in Topographys

本文针对地形变化情况,提出了地形变化调查内容;从理论和试验评价了统计方法,认为格网统计法能客观反映地物年变率;提出了更新周期计算公式,建立了地物年度率与更新周期的关系。

This peper persentsthe contents of the investigation in map revision, aimming directly at the changes of topographys. The statistic techniques have been estimated in theory and by experiments. It is considered that the annual change rate of ground objects can be calculated correctly by a square statistic method. A calculation formula of cycle for revision is presented and the relationship between the annual change rate of ground objects and the cycle for revision is decided.