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Satellite navigation forwarding deception attack defense method and device

A spoofing attack, satellite navigation technology, applied in the field of global navigation satellite system, can solve the problem of spoofing attack, unable to accurately identify real signals, etc., to achieve the effect of defending forwarding spoofing attacks and improving security

Active Publication Date: 2018-01-16
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the problem that the current technology cannot accurately identify the real signal and is easily affected by spoofing attacks, the present invention proposes a satellite navigation forwarding spoofing attack defense method and device

Method used

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  • Satellite navigation forwarding deception attack defense method and device
  • Satellite navigation forwarding deception attack defense method and device
  • Satellite navigation forwarding deception attack defense method and device

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Embodiment Construction

[0041] The specific embodiments of the invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0042] figure 1 It shows a schematic flow chart of a satellite navigation forwarding spoofing attack defense method provided by an embodiment of the present invention, including the following steps:

[0043] S1. Obtain the navigation signal receiving and processing channel corresponding to each satellite number;

[0044]S2. Obtain the signal emission time of each signal in the receiving and processing channel, select the signal with the largest signal emission time, and mark it as a real signal; The remaining signals are marked as forward spoofing attack signals.

[0045] Through the defense method of satellite navigation forwarding spoofing attacks in this embodiment, not...

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Abstract

The invention discloses a satellite navigation relay-style spoofing attack defending method and device. The method comprises the steps of S1, acquiring a navigation signal receiving and processing channel corresponding to each satellite number; S2, acquiring the signal transmitting time of each signal in the receiving and processing channel, selecting the signal with the maximum signal transmitting time and marking the signal as a true signal, and marking other signals, except the signal with the maximum signal transmitting time, in the signals of the receiving and processing channel as relay-style spoofing attack signals. By the adoption of the method and device, relay-style spoofing attack can be effectively defended, it is guaranteed that a user can still normally use a satellite navigation system even under attack of multiple relay-style deceiving sources and can still reversely determine the position of the deceiving source when only one relay-style deceiving source exists, and then necessary information is provided for clearing deceiving sources.

Description

technical field [0001] The invention relates to the field of global navigation satellite systems, in particular to a method and device for defending against satellite navigation forwarding spoofing attacks. Background technique [0002] The Global Navigation Satellite System (GNSS for short), including the Global Positioning System (GPS) of the United States, Galileo of the European Union, and Beidou of China, can provide accurate positioning, navigation, and timing for users around the world. Service, due to its good performance and low cost of use, has been widely used in the fields of commerce, transportation, electric power, aviation, spaceflight, disaster relief, etc. In addition, it also plays an extremely important role in the military. However, the navigation satellite is far away from the earth, the signal power reaching the ground is weak, the civil navigation system structure is open, the signal system is open, and the existing receiver has no anti-spoofing means ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/21
CPCG01S19/215
Inventor 李洪何力白文韬杨义臣陆明泉
Owner TSINGHUA UNIV
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