False data detection method based on space-time outliers in Internet of Vehicles

Abstract

The invention provides a false data detection method based on space-time outliers in the Internet of Vehicles. The method comprises the steps that RSUs deployed on the roadside in the Internet of Vehicles are used for collecting data of vehicle reports, the data is grouped according to time and space attributes, the similarity degree of the data in each group is quantified, and an abnormal data set with significant data divergence is detected based on a Bayesian method; an area highly related to traffic data is defined in a road space as a space-time neighborhood, the space-time neighborhood is established based on historical data, and false data significantly deviating from the whole is detected by using an outlier detection algorithm. According to the invention, space-time correlation characteristics of traffic data in a real traffic environment are utilized. False data are preliminarily judged, the deviation degree of each piece of data in a space-time neighborhood and the whole isquantified by combining a space-time outlier detection algorithm, the false data is found out, the road traffic condition can be correctly and effectively evaluated, the traffic management behavior capability is improved, and therefore rich and diverse upper-layer applications such as traffic safety and intelligent navigation are achieved.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles security, in particular to a false data detection method based on spatiotemporal outliers in the Internet of Vehicles. Background technique [0002] By installing multiple types of sensors (GPS, radar, acceleration sensor, etc.) on the vehicle, the Internet of Vehicles enables the vehicle to perceive the motion state (position, speed, direction, instantaneous acceleration, etc.) of itself and surrounding vehicles, as well as road environment information during driving. (weather, road conditions, etc.). Use dedicated short-range communication technology (DSRC: Dedicated Short-Range Communications) and 5G technology to realize wireless communication between vehicles, between vehicles and roadside infrastructure, or between vehicles and background management centers, and share these information with Surrounding vehicles, or data aggregated by pre-deployed roadside infrastructure (RSU: R...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a false data detection method based on spatio-temporal outliers in the Internet of Vehicles, which solves the technical problem of traffic chaos caused by internal opponents injecting false traffic data in the existing Internet of Vehicles

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