Название: BDS/GPS Dual-Mode Software Receiver: Principles and Implementation Technology
Автор: Yu Lu
Издательство: Springer
Год: 2021
Страниц: 526
Язык: английский
Формат: pdf (true), epub
Размер: 52.1 MB

This book introduces readers to the algorithm of Compass & GPS dual-system software receivers, and to the software implementation. It provides detailed descriptions of key theories in the fields of signal processing, communication, control, and signal estimation. The book is based on the author’s extensive experience in GNSS receiver design. The MATLAB script developed for this book demonstrates most of the key theories and equips the reader with excellent tools for practicing them.

The Global Navigation Satellite System (GNSS) is a system that uses space satellites for positioning and navigation purposes. In the early stages of GPS development, this technology was the domain of only a small number of professionals, and was most widely adopted in fields such as the military, national defense, precision guidance, land mapping, professional measurement, and atmospheric research. However, with the arrival of the 21st century, this technology is becoming increasingly indispensable in daily life, and is used for such purposes as vehicle navigation, mobile navigation, anti-loss watches for children, and location-based services.

Currently, major GNSS systems include GPS in the United States, GLONASS in Russia, the BeiDou system in China, and the Galileo system in the European Union, among which GPS is the most mature and has the highest market acceptance. The development of GLONASS stagnated after the disintegration of the Soviet, but has been revitalized and is proceeding rapidly in the 21st century. Although China’s BeiDou system had a late start, it has been developing at high speed. A regional service system covering China and parts of the Asia-Pacific region was completed in December 2012, and an international service system with global coverage is planned for completion by 2020.

There are nine chapters in this book. Chapter 1 explains the space and time system in the GNSS system, and introduces the basic principles of positioning, offering readers (especially beginners) a basic understanding of the system’s framework.
Chapter 2 details the history of the GPS and BeiDou systems, and describes the current state of the two GNSS systems and their future trajectories.
Chapter 3 explains the format of GPS and BeiDou signals and navigation messages. This chapter is the basis for an understanding of subsequent baseband signal processing, and is also the theoretical basis for implementing data demodulation, bit synchronization, carrier synchronization, and sub-frame synchronization in the design of the receiver.
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Chapter 9 details the source code of the GPS and BeiDou dual-system software receivers designed according to the theoretical principles discussed in this book. These source codes, written in C and Matlab programming languages, enable the implementation of functions such as signal acquisition, carrier and pseudo-random code tracking, sub-frame synchronization, telegram demodulation, satellite ephemeris position calculation, and PVT solution (least-squares and Kalman filtering).




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