Unlock instant, AI-driven research and patent intelligence for your innovation.

A detection method of satellite positioning spoofing attack

A spoofing attack and satellite positioning technology, which is applied in the detection field of satellite positioning spoofing attacks, can solve problems such as positioning or timing errors, and achieve the effects of low power consumption, high reliability, and low cost

Active Publication Date: 2020-12-22
EAST CHINA NORMAL UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, GNSS receivers use GNSS signals for positioning. If the GNSS receiver receives forged GNSS signals, it will cause errors in positioning or timing, which may cause serious consequences.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A detection method of satellite positioning spoofing attack
  • A detection method of satellite positioning spoofing attack
  • A detection method of satellite positioning spoofing attack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] When a simple single-antenna GNSS spoofing attack occurs, all GNSS signals are emitted from the same antenna, and its Doppler frequency shift law often has the same law, while the position and movement of GPS satellites in space The speed is often not the same, so if the difference between the theoretical Doppler frequency shift data calculated by the present invention and the actual Doppler frequency shift value obtained by the receiver exceeds the preset threshold, it will be considered to be attacked by GNSS spoofing, Thus, a GNSS spoofing attack alarm is issued.

Embodiment 2

[0028] When a direct GNSS spoofing attack using multiple antennas occurs, the attacker can control the Doppler shift value of the GNSS spoofing signal to be similar to the real situation. Since the distance between the GNSS spoofing transmitter and the attacked GNSS receiver is much smaller than the distance between the receiver and the GNSS satellite, when the receiver is in motion, spoofing interference can bring a higher Doppler frequency shift, so GNSS attacks can be detected if the difference between the theoretical Doppler frequency shift data calculated by the receiver and the actual Doppler frequency shift value obtained by the receiver exceeds a preset threshold. Even if the attacker dynamically changes the transmission frequency of the transmitted attack signal according to the moving direction of the receiver, as long as the attacker cannot correctly estimate the moving speed of the receiver, the present invention can still detect the GNSS attack to a large extent. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention discloses a satellite positioning spoofing attack detection method. The method comprises the following steps that: the frequency or phase of replica carrier signals of a receiver is adjusted, so that the satellite signals of a GNSS (Global Navigation Satellite System) satellite are received, and the actual frequency shift data of the satellite signals are acquired; the receiver is adopted to build communication with the GNSS satellite, so that the parameter data of the GNSS satellite are directly obtained, and the theoretical frequency shift data of the GNSS satellite are calculated according to the parameter data, wherein the parameter data include the ephemeris data of the GNSS satellite, a unit observation vector between the GNSS satellite and the receiver, the moving speed of the receiver, transmitting frequency and signal wavelength; and the actual frequency shift data are compared with the theoretical frequency shift data, if the difference value of the actual frequency shift data and the theoretical frequency shift data exceeds a preset threshold value, it is determined that a satellite positioning spoofing attack exists.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to a method for detecting satellite positioning deception attacks. Background technique [0002] A satellite navigation system is a satellite system that autonomously uses space positioning with global coverage, allowing a small electronic receiver to determine its location (longitude, latitude and altitude), and the time signal transmitted along the line of sight via satellite broadcasting is accurate to 10 within the range of meters. The current satellite navigation systems that can provide positioning and timing services around the world are mainly the Global Positioning System (GPS) of the United States and the Global Navigation Satellite System (GLONASS) of Russia. China's Beidou Satellite Navigation System (BDS) can now provide high-precision positioning, navigation and timing functions in the Asia-Pacific region. [0003] The emergence of various satellite navigation ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/21
CPCG01S19/215
Inventor 何道敬杜晓
Owner EAST CHINA NORMAL UNIV