NGA Explains: What is Cartography?
National Geospatial-Intelligence Agency・2 minutes read
Cartography serves different purposes with various types of maps, while the National Geospatial-Intelligence Agency (NGA) plays a critical role in producing high-quality maps like the ArcticDEM project, using satellite images to create accurate 3D models of the Arctic.
Insights
- Cartography encompasses a wide range of map types tailored for specific purposes, including topographical maps for elevation details and cadastral maps for land surveys, highlighting the diverse applications of mapping techniques.
- The National Geospatial-Intelligence Agency (NGA) stands at the forefront of modern mapmaking, utilizing advanced technologies like satellite images and aerial videos to develop precise 3D digital elevation models, exemplified by the ArcticDEM project, underscoring the agency's dedication to enhancing cartography for comprehensive global insights.
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Recent questions
What are the different types of maps?
There are general purpose maps, thematic maps, topographical maps, marine navigation charts, and cadastral maps, each serving specific needs and focusing on different details like elevation and land surveys.
Who is involved in modern mapmaking?
The National Geospatial-Intelligence Agency (NGA) plays a crucial role in modern mapmaking, producing aeronautical charts, maritime publications, and high-quality maps like the ArcticDEM project.
How does the NGA create accurate 3D digital elevation models?
The NGA utilizes satellite images and aerial videos to create accurate 3D digital elevation models, as seen in projects like the ArcticDEM, showcasing their commitment to advancing cartography for a better understanding of the world.
What is the purpose of cadastral maps?
Cadastral maps serve the purpose of land surveys, delineating property boundaries, land ownership, and other legal and administrative details related to land parcels.
What specific details do topographical maps focus on?
Topographical maps focus on details like elevation, terrain features, and natural landmarks, providing valuable information for hikers, geologists, and urban planners to navigate and understand the landscape.
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Summary
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"NGA Advances Cartography with ArcticDEM Project"
- Cartography involves creating maps for various purposes, such as general purpose maps, thematic maps, topographical maps, marine navigation charts, and cadastral maps, each serving different needs and focusing on specific details like elevation and land surveys.
- The National Geospatial-Intelligence Agency (NGA) plays a crucial role in modern mapmaking, producing aeronautical charts, maritime publications, and high-quality maps like the ArcticDEM project, which utilized satellite images and aerial videos to create accurate 3D digital elevation models of the Arctic, showcasing the agency's commitment to advancing cartography for a better understanding of the world.
