This book offers professionals and students a comprehensive overview of GPS signal acquisitions, measurements, and algorithms for estimation of dynamic programming, quality control, and filtering methods. This book discusses in-depth GPS signal transmissions, transmission procedures and calculation algorithms, using GPS positioning location data for empirical research to elucidate various dimensions of spatial phenomenon which is different from previously published books. This book also focuses on how to conduct empirical research with GPS collected data to contribute discipline theory and concepts in different domains. The book is divided into three parts. Part I introduces debates about measurements of GPS signal structure, including acquisition time, validity based on various tested GPS units, quality control of real-time positioning, data characteristics of probed density, average time, and signal disturbance of message distribution such as noise and inaccuracy positioning. Part II describes applications of GPS positioning data for monitoring analysis, movement analysis, spatial analysis and clustering analysis. Part III presents GPS sources of error and biases by discussing the technology of positioning location for underwater positioning, and clarifying the accuracy of digital maps to positioning systems for vehicle positioning. This book brings together a team of leading experts who perform a creative and empirical research of Global Positioning Systems. The book aims to share all the latest advances in systems, methods and application of GPS positioning with the readers. The topics in this book cover an integrated overview of GPS conceptions, an in-depth realisation of advanced application, and the emerging trends in GPS research.