大比例尺地形图动态更新与比较分析

Dynamic update and comparative analysis of large-scale topographic maps

大比例尺地形图是城市规划和自然资源管理的重要依据,数据现势性是地形图的生命力。本文通过实际工程案例,使用航空摄影测量法、倾斜摄影测量法和移动测量法对大比例尺地形图进行动态更新,并对采用这三种方法获取成果的结果精度、工作效率和优缺点进行比较分析。实践结果表明,相关工作者应针对实际工程环境,采用最佳数据采集方法,实现大比例尺地形图动态更新的高效、可靠获取数据,具有较高的参考价值,也为基础测绘新设备、新技术的发展及转型升级起到了积极推动作用。

Large-scale topographic maps are an important basis for urban planning and natural resource management,and data availability is the vitality of topographic maps.Through practical engineering cases,dynamic updates of large-scale topographic maps were carried out by using aerial photogrammetry,oblique photogrammetry,and mobile measurement methods.The accuracy,efficiency,and advantages and disadvantages of the results obtained by these three methods were compared.The practical results indicate that relevant workers should adopt the best data collection method according to the actual engineering environment and achieve efficient and reliable data acquisition for dynamic updates of large-scale topographic maps.The results have high reference value and play a positive role in promoting the development and transformation of new equipment and technologies for basic surveying and mapping.