BeiDou augmentation and its future
Academician of Chinese Academy of Engineering, Wuhan University
ABSTRACT: Up to Oct. 2018, 16 BeiDou-3 satellites have been deployed in medium earth orbit. Besides the newly designed signals and different satellite buses, updated rubidium atomic frequency standards, new passive hydrogen masers, and inter-satellite links equipment have been carried. The new and improved features do not only improve the performance of BeiDou-3, but also provide promising way for construction of next generation of BeiDou system. In this talk, the performance of BeiDou-3 onboard frequency standards will be presented. Moreover, the augmented performances of BeiDou-3 precise orbit/clock determination with the inter-satellite links (ISL) will be presented and analyzed. And the ISL’s contribution to signal-in-space ranging errors will be highlighted. Based on these analysis, the application of optical clocks, laser-based inter-satellite communication, and low earth orbiter satellites for the next generation of BeiDou will be discussed.
Prof. Liu Jingnan, the academician of Chinese Academy of Engineering, and the former President of Wuhan University, is the former president of Duke Kushan University and the director of national engineering research center for satellite positioning system.
Prof. Liu Jingnan has been engaged in the research of geodetic theories and applications, including national coordinate system establishment, GNSS technology and software development, as well as large project implementation. And a lot of significant projects have been accomplished under his lead, e.g. Provincial and City CORS system establishment. As an academic authority in GNSS field, he has been awarded more than 10 national or provincial prizes for progress in science and technology.