Satellite signal evaluation method and device
By acquiring satellite signals and vehicle speed values, the variance of the carrier-to-noise ratio (CNR) threshold is calculated. Combined with vehicle vibration and interference information, the CNR threshold is dynamically adjusted, which solves the instability problem of satellite signals under multipath effects and improves the accuracy of satellite signal evaluation and the stability of navigation and communication.
CN121763313APending Publication Date: 2026-03-31SAIC GM WULING AUTOMOBILE CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-03-31
AI Technical Summary
Technical Problem
Satellite signals are unstable during propagation due to the multipath effect, which affects the accuracy of vehicle positioning.
Method used
By acquiring satellite signals from visible satellites and vehicle speed values, the variance of the carrier-to-noise ratio (CNR) threshold is calculated. Combined with vehicle vibration intensity and interference information, the CNR threshold is dynamically adjusted to assess the stability of satellite signals.
Benefits of technology
It improves the accuracy and stability of satellite signal assessment in complex environments, ensuring the reliability of navigation and communication.
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Figure CN121763313A_ABST
Abstract
The invention provides a satellite signal evaluation method and device. According to the method, a variance value of a carrier-to-noise ratio value is obtained through a satellite signal of a visible satellite, and a carrier-to-noise ratio threshold value of the satellite signal is determined at least through a vehicle speed value of a vehicle; and performing quality evaluation on the variance value of the carrier-to-noise ratio value through a carrier-to-noise ratio threshold value, and determining whether the satellite signal of the visible satellite is stable or not. The stability of the satellite signal is evaluated through the carrier-to-noise ratio threshold value determined in various objective environments, so that the evaluation result is more objective and accurate, and the evaluation quality of the satellite signal in a complex environment is remarkably improved.
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