天津市第一次全国地理国情普查外业调绘核查

Introduction to the Tianjin First National Geographic Conditions Survey Field Annotation for Verification

地理国情外业调查与核查是天津市地理国情普查工作十分重要的工作内容,是关系地理国情普查数据质量的关键工作。根据《天津市第一次地理国情普查总体方案》和《天津市第一次全国地理国情信息普查内容与指标》要求,外业对内业采集的地理国情要素无法准确解悉、无法确定属性、以及无法确定地类边界的地物进行实地调查与核查,并且对遥感影像样本进行采集,最终形成地表覆盖分类数据、地理国情要素数据。

field investigation and verification is the state of the geography of tianjin geographical conditions census work important content, is the key to the relationship between geographical conditions census data quality work.According to the tianjin first overall scheme of census on geographical conditions and the first national geographic conditions of tianjin information content and index of census, field internal industry gathering of geographical conditions cannot be accurately informed, uncertain factors of properties, and uncertain boundary features of field investigation and verification, and samples of remote sensing image acquisition, eventually forming the surface cover classification data elements, geographic conditions.