Guided by the service principle of "4R" (Right Time, Right Place, Right Data, Right Person), the book is dedicated to answering six core questions: "When, Where, What Object, What Change, What Mechanism, and What Decision." It aims to propel traditional surveying and remote sensing toward a new paradigm centered on intelligence, providing a systematic theoretical framework and technical pathway for understanding complex spatio-temporal processes, constructing digital twin worlds, and achieving sustainable development.

This book is intended for researchers and engineers in fields such as surveying and mapping, remote sensing, geographic information, navigation, and artificial intelligence. It also serves as a systematic and authoritative reference for university faculty and students, policymakers, and technical developers. Through this book, readers will gain a comprehensive understanding of the disciplinary framework, core technologies, and application prospects of Spatio-Temporal Intelligence, laying a solid foundation for further research and engineering implementation.