Hardware Implementation Of ADS-B Spoofing Attack Detection Based On Spatial Correlation

Automatic Dependent Surveillance-Broadcast(ADS-B)is an aircraft operation monitoring technology based on airborne navigation system and airborne broadcast transmission system.As an important component in the future civil aviation monitoring field,ADS-B technology has been greatly developed and applied at present.However,due to the broadcast characteristic of ADS-B system and its open protocol,ADS-B system is vulnerable to the threat of spoofing attack,which will have a serious impact on air traffic control.In order to solve this problem,ADS-B spoofing attack detection method based on spatial correlation is optimized,and the optimized method is also implemented by using cross-antenna array,signal processing platform with FPGA and DSP as the core as well as other existing hardware devices,thus forming a transformation from theory to practice and laying a foundation for the development of anti-jamming ADS-B receiver.Firstly,the basic principle of ADS-B spoofing attack detection method based on spatial correlation is introduced.On this basis,the algorithm is optimized according to the characteristics of hardware implementation and the verification results of real data.The optimized algorithm reduces the complexity of the original algorithm and is more suitable to be implemented on hardware platform.Secondly,the hardware implementation of ADS-B spoofing attack detection method is designed on the basis of existing hardware platform,and the hardware composition of ADS-B spoofing attack detection system is introduced.According to the structure of the algorithm and the characteristics of each hardware module,the whole hardware platform is divided into functions.The design of hardware function is mainly divided into two parts: FPGA and DSP,and they are respectively designed with specific functions.After that,the jamming detection system is implemented on hardware platform according to the designed schemes,and the results of data processing are analyzed concretely in the process of implementation.Finally,the system is tested with real target signals and ghost target signals.The ADS-B signals emitted by the external aircrafts are real target signals,while signals emitted by the independently developed ADS-B signal transmitting system are ghost target signals.The test results show that the system can identify ADS-B spoofing attack effectively,and it can provide reference for the future implementation of ADS-B spoofing attack detection.