公开(公告)号：US20240319385A1

公开(公告)日：2024-09-26

申请号：US18189941

申请日：2023-03-24

申请人： QUALCOMM Incorporated

发明人： Min WANG ,  James STEPHEN ,  Ning LUO ,  Yinghua YANG ,  Yuxiang PENG ,  Furqan AHMED

IPC分类号： G01S19/43 ,  G01S19/39 ,  G01S19/41 ,  G01S19/42

CPC分类号： G01S19/43 ,  G01S19/393 ,  G01S19/396 ,  G01S19/41 ,  G01S19/425

摘要： Techniques for precise positioning using differential carrier phase (DCP)-based measurement updates are disclosed. The techniques can include obtaining a pseudorange observation for a positioning epoch and a carrier phase observation for the positioning epoch based on measurements of global navigation satellite system (GNSS) signals transmitted by one or more space vehicles (SVs) of a GNSS constellation, generating a differential carrier phase observation for the positioning epoch based on the carrier phase observation for the positioning epoch and a determination that real-time kinematic (RTK) correction data associated with the GNSS constellation is unavailable, and generating a position, velocity, and time (PVT) observation of the mobile device for the positioning epoch based on the differential carrier phase observation for the positioning epoch.