一种低成本智能终端卫惯组合精密单点定位方法及装置
Through collaborative innovation in pseudorange bias correction, observation anomaly handling, and ionospheric delay adaptation, combined with the early warning and recovery mechanisms of RAIM and LSTM, and by dynamically selecting the GNSS and INS combination mode, the problem of high-precision positioning of low-cost smart terminals in complex environments has been solved, achieving high robustness and adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AEROSPACE INFORMATION RES INST CAS
- Filing Date
- 2025-11-11
- Publication Date
- 2026-07-17
AI Technical Summary
Low-cost smart terminals face problems such as large pseudorange-frequency deviation, high observation noise, and handover lag when achieving precise single-point positioning, making it difficult to maintain high accuracy and robustness in complex environments.
A collaborative innovation approach is adopted, which combines pseudorange bias correction, observation anomaly handling, ionospheric delay adaptation, and combined mode optimization. It integrates semi-parametric estimation, RAIM and LSTM mechanisms for early warning and recovery, dynamically selects the combined GNSS and INS modes, and uses extended Kalman filtering for position parameter estimation.
It significantly improves positioning accuracy and robustness, adapts to positioning continuity in complex environments, reduces hardware performance limitations, and achieves high-precision, high-reliability positioning, making it suitable for diverse application scenarios.
Smart Images
Figure CN121559568B_ABST