通过对经纬仪测绘法1：50 0地形测图过程中各个工序的分析，得出了1：50 0地形图上的点位中误差。
Through the analysis on every procedure of surveying 1:500 topographic map with the method of transit mapping, the position error of 1:500 topographic map is got.
全站仪的地形图测绘方法全站仪测图的工作过程主要有：数据采集、数据处理、图形编辑和图形输出。
Total station topographic mapping method Total station mapping of the work process are: data collection, data processing, graphics editing and graphics output.
用对比的方法着重分析了提高测图精度的原因，并对DM 502红外测距仪的反射镜安置方法作了较详细的叙述。文章后谈到了DM 502红外测距仪测绘地形的优点。
Through comparison it is mainly discussed why the accuracy of mapping can be improved using DM502 as well as how to set the reflector related to DM502.
多波束测深仪是高精度、高效率的地形测绘设备，适合大面积的扫海测量作业，是21世纪水下地形测量必不可少的测绘仪器。
Multi-Beam Echo Sounder is an absolutely necessary seafloor mapping device with high accuracy and high efficient at 21st century. It is much fitted to sweep mapping for wide area.
多波束测深仪是高精度、高效率的地形测绘设备，适合大面积的扫海测量作业，是21世纪水下地形测量必不可少的测绘仪器。
Multi-Beam Echo Sounder is an absolutely necessary seafloor mapping device with high accuracy and high efficient at 21st century. It is much fitted to sweep mapping for wide area.
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