- 专利标题: Ionosphere Grid History and Compression for GNSS Positioning
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申请号: US17377255申请日: 2021-07-15
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公开(公告)号: US20230017707A1公开(公告)日: 2023-01-19
- 发明人: Min WANG , Ning LUO , Gengsheng ZHANG , Kannan MUTHURAMAN
- 申请人: QUALCOMM Incorporated
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 主分类号: G01S19/07
- IPC分类号: G01S19/07 ; G01S19/40
摘要:
Described are methods, systems, and devices for correcting ionospheric error. In some aspects, a mobile device equipped with a Global Navigation Satellite System (GNSS) receiver is configured to determine a positioning measurement of a GNSS signal. The mobile device is further configured to receive augmentation data from an augmentation system. When augmentation data for a current measurement period is unavailable, the mobile device can obtain augmentation data associated with Total Electron Content (TEC) values (e.g., vertical TEC values) during one or more prior measurement periods. Based on the augmentation data associated with TEC values during one or more prior measurement periods and a pierce point of the received GNSS signal, an ionospheric error in the positioning measurement of the GNSS signal can be determined and corrected.