Discussion on the Method of Drawing and Storing 1∶500 Topographic Maps for New Basic Surveying and Mapping
Taking the new basic surveying and mapping project in Hannan District of Wuhan City as an example,in combination with the 1:500 topographic map drawing and warehousing process,first collect the early aerial flight and field survey data,then use low altitude ob-lique photogrammetry to obtain aerial survey data,then draw a 1:500 topographic map based on the actual three-dimensional model of the survey area and conduct additional field mapping,then conduct quality inspection and data warehousing of the topographic map,and finally conduct results acceptance. Finally,the topographic map results of the survey area that meet the accuracy and quality requirements are ob-tained,which can provide data support for the implementation of follow-up real estate registration,land and space planning and other related work in Hannan District.
new basic surveying and mappingtopographic mapoblique photographyfield mappingquality inspection
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