GNSS navigation anti-spoofing method, system and device based on extended circular array wave arrival estimation
CN116908883BActive Publication Date: 2025-02-28HENAN ACAD OF SCI INST OF APPLIED PHYSICS CO LTD +2
Patent Information
- Application Number
- CN202310713621.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-16
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2043-06-16
AI Technical Summary
Technical Problem
The existing GNSS navigation system is difficult to effectively distinguish and suppress when facing fraud and interference, resulting in wrong positioning results and is highly harmful.
Method used
Using a method based on extended circular array wave estimation, the characteristics of the spoofed interference signal are extracted by constructing high-order cumulative parameters and feature decomposition, and combined with a space-space adaptive filter, the spoofed interference signal is suppressed.
Benefits of technology
Effectively extract the characteristics of the spoofed target signal, improve positioning accuracy, completely suppress spoofed interfering signals, and enhance the security of the GNSS navigation system.
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Figure CN116908883B_ABST
Abstract
The present invention relates to a GNSS navigation anti-spoofing method, system and device based on extended circular array wave arrival estimation, belonging to the field of GNSS navigation technology. A GNSS navigation anti-spoofing method based on extended circular array wave arrival estimation is characterized in that the GNSS navigation includes an M-element uniform circular array with its center at the origin of coordinates, the radius of the uniform circular array is R=λ / 2, λ is the wavelength of the carrier signal, and the GNSS navigation processes the received signal as follows: Step 1, the GNSS navigation system receives a useful signal and a deceptive interference signal, Step 2, feature decomposition of C; Step 3, array flow pattern formed by two deceptive disturbances; Step 4, QR decomposition is used to solve the deceptive interference signal disturbance array flow pattern set.
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Citation Information
Patent Citations
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