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Deception signal detection method and device

A detection method and signal detection technology, applied in the field of global navigation satellite systems, can solve the problems of high complexity, low accuracy, and deception signals of satellite navigation signals, so as to improve user experience and ensure safety and reliability. , to solve the effect of high complexity

Pending Publication Date: 2022-01-21
TSINGHUA UNIV
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Problems solved by technology

[0005] The present invention provides a method and device for detecting spoofed signals, which are used to solve the defects of high complexity and low accuracy of the technical means for identifying false satellite navigation signals in the prior art, and realize fast and effective determination of satellite navigation signals. The signal includes false satellite navigation signals to ensure the safety and reliability of the results output by the user's receiver

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  • Deception signal detection method and device
  • Deception signal detection method and device
  • Deception signal detection method and device

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Embodiment Construction

[0053] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] Combine below Figure 1-Figure 3B The detection method of the spoofing signal of the present invention is described.

[0055] An embodiment of the present invention provides a method for detecting a spoofed signal, and the method can be applied to a smart terminal, such as a mobile phone, a computer, a tablet, a receiver, etc., and can also be applied to a server. In the following, t...

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Abstract

The invention provides a deception signal detection method and device. The method comprises the following steps: acquiring K satellite navigation signals; based on the K satellite navigation signals, calculating a first Doppler velocity and a second Doppler velocity corresponding to the current moment, calculating the first Doppler velocity through a first velocity calculation strategy, calculating the second Doppler velocity through a second velocity calculation strategy, and the first velocity calculation strategy and the second velocity calculation strategy being not consistent; calculating a difference value between the first Doppler velocity and the second Doppler velocity; inputting the difference value into a first preset calculation formula to obtain a signal detection value output by the first preset calculation formula; and when the signal detection value is greater than a preset signal detection threshold value, determining that a deception signal exists in the K satellite navigation signals. The method is used for overcoming the defects of high complexity and low accuracy of technical means for identifying false satellite navigation signals in the prior art.

Description

technical field [0001] The invention relates to the technical field of global navigation satellite systems, in particular to a method and device for detecting deceptive signals. Background technique [0002] With the global positioning system (Global Positioning System, referred to as GPS), GLONASS satellite navigation system (GLONASS), Galileo satellite navigation system (Galileo satellite navigation system, referred to as Galileo), Beidou and other global satellite navigation systems ( GNSS) is widely used in various industries, and its security issues have gradually attracted the attention of academia and industry. [0003] Due to factors such as the low receiving power of the satellite navigation signal reaching the ground and the publicity of its signal structure, the satellite navigation signal itself has the characteristics of fragility, making the user receiver vulnerable to external interference. Among them, a kind of external interference with greater harm is call...

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Application Information

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IPC IPC(8): G01S19/21G01S19/35
CPCG01S19/215G01S19/35
Inventor 李洪周子恒陆明泉
Owner TSINGHUA UNIV