The Theory and Practice of the Aerial Map of the Lower Reaches of Yellow River on the Scale of 1 to 10,000

In the survey of the topographic map of the lower reaches of Yellow River on the scale of 1 to 10,000, some reaches are mapped by aerial analytic plotting apparatus. The apparatus is required for drawing the professional map. According to the theoretical requirement and real accuracy of finished map, the work scheme is determined, the accuracy is analysed and the quality of finished map is improved.