Research And Implementation Of The Algorithms For High-Accuracy Velocity In GNSS Receiver

In the1960s, the appearance of Global Navigation Satellite System provides a new way of thinking for navigation and positioning services. With the development of GNSS, it has showed a strong ability in civil and military fields. The positioning, navigation and timing are the three main functions of GNSS which can meet the needs of many applications. In order to meet the needs of various fields, especially in the military field, many countries have been developing their own GNSS; the competitions of GNSS have been upgraded to a national strategic level to ensure the development of GNSS in their own countries. The receiver is the user equipment part of GNSS. GNSS receivers are the most widely used and the biggest part of GNSS market with the mostly flexible. With the development of technology and application of GNSS, the development of user receiver becomes the focus of the study GNSS. How to get the exact location, velocity and other information are the important parts in the development of GNSS receiver.This paper studies the algorithms for high-accuracy velocity in GNSS Receiver.,The First chapter introduces the research background, history and the development of GNSS. The second chapter describes the composition of GNSS, coordinates and time systems of GNSS, GNSS positioning methods principle and so on. The third chapter introduces the entire system architecture and functional modules of GNSS receiver. Then the paper introduces the algorithms of velocity in GNSS receiver with analysis and implementation. Then the paper proposes the optimization methods for the algorithms of velocity. Finally, it is the testing of the different algorithms in different test scenarios. At last, the paper analyses and summarizes the results, as well as prospects for the future development.