False data detection method based on spatio-temporal outliers in Internet of Vehicles

Abstract

The present invention proposes a false data detection method based on spatio-temporal outliers in the Internet of Vehicles, the steps of which are: using the RSU deployed on the roadside in the Internet of Vehicles to collect data reported by vehicles, grouping the data according to time and space attributes, Quantify the similarity of data in each group, and detect abnormal data groups with significant data divergence based on Bayesian methods. The highly correlated area of ​​traffic data in the road space is defined as the spatio-temporal neighborhood, and the spatio-temporal neighborhood is established based on the historical data, and the outlier detection algorithm is used to detect the false data that deviates significantly from the whole. The present invention utilizes the time-space correlation characteristics of traffic data in the real traffic environment to preliminarily judge false data, and then combines the time-space outlier detection algorithm to quantify the degree of deviation between each data in the space-time neighborhood and the whole, and find out false data, which can be correct and effective It can accurately evaluate road traffic conditions, improve traffic management behavior capabilities, and realize a variety of upper-level applications such as traffic safety and intelligent navigation.

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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