SBAS and RTK high-precision positioning data fusion method and device

• Main Authors: ZHANG JIE, ZANG ZHIBIN, ZHANG LIPING, CHEN HAONAN, WEI SIYANG
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses an SBAS and RTK high-precision positioning data fusion method and device. The method comprises the following steps: establishing a state equation through a data state variable of a client terminal; extracting and fusing satellite-based augmentation system ground monitoring station data and ground-based augmentation system measurement data using a carrier phase real-time difference technology; establishing a unified observation equation and a covariance model; smooth transition of data with different precisions between a satellite-based augmentation system and a ground-based augmentation system using a carrier phase real-time difference technology is realized by combining a navigation satellite system and an inertial navigation system; internet and satellite double-link design is used; wherein the satellite double-link design comprises a main link and a standby link; and seamless user switching among various broadcast links is realized by using a consistency algorithm. According to the