Broadcasting (networking)

Sun-synchronous orbit

Engineering

Geodesy

GNSS applications

Aerospace engineering

Geostationary orbit

Offset (computer science)

Satellite

Orbit (dynamics)

Medium Earth orbit

Programming language

Precise Point Positioning

Geography

BeiDou Navigation Satellite System

Satellite system

Computer network

Satellite navigation

Computer science

Global Positioning System

Remote sensing

Telecommunications

Real-time computing

Geosynchronous orbit

Satellite Navigation

Within the framework of differential augmentation, this paper introduces the basic technical framework and performance of the BeiDou Global Navigation Satellite System (BDS-3) Satellite-Based Augmentation System (BDSBAS), including orbit products, satellite clock offset products, ionosphere and its integrity performance. The basic principle of BDS-3 Precise Point Positioning (PPP-B2b) is expounded, the similarities and differences between the PPP service provided by BDS-3 and International Global Navigation Satellite System (GNSS) Service (IGS) are discussed, and the limitations of PPP-B2b are analyzed. Since both the BDSBAS and PPP-B2b utilize a ground monitoring station network to determine the satellite orbits and clock offset corrections, and broadcast differential corrections through the three Geostationary Orbit (GEO) satellites of BDS-3, the feasibility of the co-construction of BDSBAS and PPP-B2b is analyzed, strategies for the infrastructure sharing and correction broadcasting are presented, and the influences of BDSBAS correction broadcasting strategy adjustment are evaluated. In addition, it assesses the possibility of broadcasting differential corrections through the Inclined Geosynchronous Orbit (IGSO) satellites of BDS-3, and the feasibility of augmenting satellite navigation with Low Earth Orbit (LEO) satellites.

Principle and performance of BDSBAS and PPP-B2b of BDS-3