Line mapping from satellites in the ordnance survey

Abstract

This document discusses the evolution and significance of satellite mapping in the context of topographic surveys, particularly focusing on the advancements brought by the SPOT satellite program. It highlights the challenges faced in developing countries where outdated mapping techniques hinder effective land use planning and development. The paper emphasizes the necessity for high-resolution mapping to support urban planning and infrastructure development, especially in regions where traditional mapping methods are inadequate. It also explores the technical aspects of satellite imagery, including the use of stereo photogrammetry and ground control points to enhance the accuracy of maps. Furthermore, the document addresses the economic implications of mapping technologies and the increasing demand for efficient data acquisition methods in the face of rapid urbanization and environmental changes.