Vehicle positioning interference attack detection method and system
A vehicle-mounted positioning system and energy technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, measuring devices, etc., to achieve accurate deception and interference detection, clear vehicle positioning principles, and novel detection angles.
Active Publication Date: 2017-06-20
北京踏歌智行科技有限公司
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Anti-jamming technologies at the present stage include signal power detection method, direction of arrival detection method, chip and carrier rate consistency test, etc., but the above methods can only detect specific interference, and are used in military research
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[0037] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.
[0038] Such as figure 1 Shown is a schematic diagram of a vehicle being jammed and attacked in the present invention. The system includes a satellite 1 , a signal jammer 2 , a vehicle 3 to be positioned, and environmental noise 4 . When the vehicle to be positioned is not attacked by interference, the vehicle positioning system only receives the signal transmitted by the satellite 1 and the weak environmental noise signal 4, and the interference of the environmental noise can be filtered out through the existing technical means.
[0039] The vehicle positioning system uses the principle of three-ball positioning, and calculates the pseudo-distance d between the vehicle and the satellite by measuring the time difference, so as to know the position of the vehicle. where d=c×f, c is the propagation speed of light, and f is the propagation delay of sate...
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The invention discloses a positioning interference attack detection method, and the method comprises the following steps: 1, carrying out the spectrum analysis of a signal received by a vehicle positioning system, wherein the signal comprises a satellite signal, environment noise and an interference signal emitted by an interference unit; 2, calculating the energy corresponding to each frequency of the received signal after spectrum analysis; 3, judging whether there is cheating interference or not; 4, judging whether there is compressed type interference or not. The invention also discloses a vehicle positioning interference attack detection system, and the system employs the above method to detect whether a vehicle is attacked by the interference or not. The method and system can carry out the detection of the interference attack in vehicle positioning, which comprises the compressed type interference detection and cheating interference detection. The method and system can solve a problem of vehicle positioning information safety in an intelligentization development process of vehicles.
Description
technical field [0001] The invention relates to the technical field of vehicle-mounted sensor environment perception security, and is suitable for vehicles carrying a GPS positioning system, in particular to a vehicle-mounted positioning interference attack detection method and system. Background technique [0002] In recent years, car navigation systems have been widely used in more and more vehicles. Whether it is a vehicle driving assistance system or a fully intelligent driverless car, car navigation has become increasingly indispensable. Among them, the car navigation system relies the most on vehicle positioning. At the same time, the anti-jamming of the positioning system has become a research hotspot in the industry. The main goal of anti-jamming is to accurately perceive the existence of jamming signals and take corresponding strategies to eliminate the influence of jamming. [0003] At present, the research on positioning and anti-jamming is mainly aimed at milit...
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Login to View More IPC IPC(8): G01S19/21
CPCG01S19/21G01S19/215
Inventor 余贵珍王云鹏王章宇王朋成李欣旭
Owner 北京踏歌智行科技有限公司