Abstract
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Highlights
90 Kansas, an economically underdeveloped region in the world, belongs to no map region, and the region with 1:50,000 topographic maps in the world only accounts for about 1/2[1]
Field GPS control points, the cost is high, the cycle is long, cost a lot of manpower, resources and three satellite images can be in the absence of measurement under the condition of control points, using the characteristics of the rational function model, only using own RPC parameter file, you can free net area adjustment calculation, plane precision can reach 15 m, meet the production of 1:50000 topographic map, data accuracy in cost savings and improve the work efficiency under the premise of realize the precise localization of ground targets, it is very significant political, military and economic significance
According to the features of resource 3 satellite image and the technical standard of 1:50,000 topographic map, the measurement process of 1:50,000 topographic map in difficult areas based on resource 3 satellite image is designed
Summary
90 Kansas, an economically underdeveloped region in the world, belongs to no map region, and the region with 1:50,000 topographic maps in the world only accounts for about 1/2[1]. With the continuous development of national political, economic and military aspects, the need for 1:50,000 topographic maps in difficult areas is becoming more and more urgent, and resource 3 satellite (zy-3) image using the non-control point measurement technology has become the preferred data source. Compared with the traditional aerial photography, the zy satellite image has the features of low cost, short cycle and strong current situation. It is not limited by geographical conditions and political and military conditions, and can quickly provide security for emergency. As the first civil high-resolution surveying and mapping satellite in China, the resource-3 satellite adopts the photogrammetry technology without control points, and some technical indexes of the satellite have reached the similar foreign surveying and mapping satellites. According to the characteristics of resource 3 satellite, this paper designed the technical process of producing 1:50,000 topographic map based on resource 3 satellite image, and conducted beneficial exploration for the future use of resource 3 satellite image in large area surveying topographic map
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