明长城长度测量关键技术

Key technology of measuring length of the Ming Great Wall

按照基于影像的长城解译与调查结果,为科学获取明长城的坡面长度,本文主要采用了下列的关键技术:首先为不同种类的长城段落定义测量规则;其次,准确确定长城每段的起止点;第三,按照统一的标准和技术流程在立体模型上精确测定长城每一处特征点的三维空间坐标;最后,在统一的计算模型下,计算每段长城的长度,通过汇总的方式获得分省工作区和全国的各类长城长度。成果为相关研究提供了参考。

According to the image interpretation and investigation results of the Great Wall, the following key technologies were used to capture the slope length of the Ming Great Wall in the paper, firstly, the measurement rules for the all kinds of the Section Great Wall were defined; secondly, the beginning and ending position points of each measuring section of the Great Wall were accu- rately determined ; thirdly, the three-dimensional coordinates of each inflex point on the surface center line of the MGW under the ster- eo pairs with uniform standards and technical processes were accurately measured ; finally, under the unified length calculation model, the each section length of the Great Wall was figured up until the provincial and the national lengths of various types of Great Wall were derived from the section length, the results provided a reference for related studies.