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港口航道图测量工作量的计算是测绘计划编排和任务管理的基础性工作,一直以来完全采用手工方式操作完成,具有计算工作量大、精度不高、容易出错等缺点。探讨了基于GIS技术的港口航道图测量工作量自动计算系统的主要研究内容,采用GIS技术中的成熟空间操作算法,系统实现了图幅各类多边形的全自动提取、自动裁剪、自动拼接、自动扩展,最终实现工作量的自动计算,从而取代繁琐的人工操作,最大限度实现工作量计算的自动化,改进测绘生产管理效率。
The calculation of the survey volume of the port waterway plan is the basic work of mapping plan and task management. It has been completely finished by manual operation and has the disadvantages of large calculation workload, low precision and error-prone. In this paper, the main research content of automatic calculation system of port fairway survey workload based on GIS is discussed. The mature space operation algorithm of GIS is used to realize the automatic extraction, automatic cutting, automatic splicing, automatic splicing Expand, and finally realize the automatic calculation of the workload, thus replacing the cumbersome manual operation, to maximize the workload calculation automation, improve the efficiency of surveying and mapping production management.