公开(公告)号：US20230061599A1

公开(公告)日：2023-03-02

申请号：US17983835

申请日：2022-11-09

Applicant: BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.

Inventor： Lei XIA ,  Hailu Jia ,  Xi Chen ,  Guangdi Shan

IPC: G01S19/27 ,  G01S19/29

Abstract: A positioning method, an electronic device and a storage medium, which relate to a field of computer technology, and in particular to fields of positioning technology and satellite navigation technology. The method includes: acquiring satellite observation data for a target object, broadcast ephemeris data for the target object, and state space representation for the target object; performing an error correction on the broadcast ephemeris data using the state space representation; determining a target positioning model according to the satellite observation data and the corrected broadcast ephemeris data; and performing a resolving operation on the target positioning model to obtain position data of the target object.

公开(公告)号：US20220035045A1

公开(公告)日：2022-02-03

申请号：US17450968

申请日：2021-10-14

Applicant: Beijing Baidu Netcom Science Technology Co., Ltd.

Inventor： Guangdi SHAN ,  Hailu JIA ,  Xi CHEN ,  Lei XIA

IPC: G01S19/25 ,  G01S19/08 ,  G01S19/27

Abstract: An ephemeris data processing method, electronic device and storage medium are disclosed, which relate to the fields of satellite communication, positioning, and navigation. The ephemeris data processing method includes: receiving raw ephemeris data from a plurality of user devices; analyzing the raw ephemeris data according to an analysis mode of each user device and a satellite ephemeris protocol of each galaxy. According to embodiments of the present disclosure, ephemeris data of a plurality of user devices can be centrally processed and stored, thereby storing more complete ephemeris data and then providing more abundant ephemeris data.

公开(公告)号：US20220023136A1

公开(公告)日：2022-01-27

申请号：US17492650

申请日：2021-10-03

Applicant: BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.

Inventor： Lei XIA ,  Xi CHEN ,  Hailu JIA ,  Guangdi SHAN

IPC: A61H3/06 ,  G01C21/36 ,  G01C21/34 ,  G01S19/43

Abstract: A method for guiding a blind, an electronic device, a storage medium and a blind guide product, and related to the technical field of navigation are provided. The method includes: acquiring Beidou satellite data and base station differential data, and determining location information of a user by using a carrier phase differential technology; in response to a blind guide request, generating a blind guide route according to current location information and destination information input by the user; and broadcasting a voice prompt based on the blind guide route. The location accuracy of a user is improved, and blind guide requirements for a complex road section can be met, thereby improving the travel safety for the user.