为实现国家西部1:50 000地形图空白区测图工程:丰富产品种类,拓展服务领域的设计宗旨,根据ISO 9000对产品的概念,提出了西部测图工程整体产品模式,并对其进行细化,建立了国家西部测图工程地形图产品模式.本文以西部测图工程1:50 000影像地形图的设计与实现为实例,详细介绍了1:50 000影像地形图测绘新产品的设计要点,包括影像地形图的要素选取原则、选取内容、要素表达设计原则、设计要点等内容.另西部测图工程提出了适合我国西部人工地物稀少地区的1:50 000影像地形图制图技术,研制了"国家西部1:50 000地形图空白区测图工程 1:50 000影像地形图技术规定",并制作了相应的产品样本.该技术已指导覆盖西部测图工程测区全域1:50 000影像地形图的生产,对丰富国家基本比例尺地形图品种具有重要意义.

To achieve the design tenet "providing various products, and extending service sphere" of National Western Mapping Program, the product pattern of the whole program and Topographic Map Product Pattern are established according to the product concept of ISO 9000. In order to provide users with more diverse varieties of new GIS products that contain richer content, it is proposed that image topographic maps and hill-shading topographic maps should be produced as the DLG (Digital Line Graphic) topographic maps offered in the 1:50 000 topographic mapping of blank areas in the western region, China. In this paper we firstly described the product pattern and Topographic Map Product Pattern of National Western Mapping Program respectively. Then, taking the design and realization of the 1:50 000 Image Topographic Map as an example, we introduced design points in detail about how to develop a new type map product, including the contents contained in the Image Topographic Map and principles about how to represent them. Now, the technical specification document that specify how to produce image topographic maps have been put forward based on some experiments, and the study results have been applied to the 1:50 000 topographic mapping of blank areas in the western region project to guide the production of image topographic maps. In this paper we demonstrated that the image topographic maps are good supplementary products for topographic maps, which can provide more texture information for users.