Optimization of digital multi-beamforming for space-based ADS-B using distributed cooperative coevolution with an adaptive grouping strategy  

作　　者：Xueyuan LI Xuejun ZHANG Yuanhao TAN Jianxiang MA 

机构地区：[1]School of Electronic Information Engineering,Beihang University,Beijing 100191,China [2]Beijing Laboratory for General Aviation Technology,Beihang University,Beijing 100191,China [3]Beijing Key Management Laboratory for Network-based Cooperative Air Traffic Management,Beihang University,Beijing 100191,China [4]The Beihang University International Center for Innovation in Western China,Chengdu 610218,China

出　　处：《Chinese Journal of Aeronautics》2023年第10期391-408,共18页中国航空学报（英文版）

摘　　要：Space-based Automatic Dependent Surveillance-Broadcast(ADS-B)technology can eliminate the blind spots of terrestrial ADS-B systems because of its global coverage capability.However,the space-based ADS-B system faces new problems such as extremely low Signal-toNoise Ratio(SNR)and serious co-channel interference,which result in long update intervals.To minimize the position message update interval at an update probability of 95%with full coverage constraint,this paper presents an optimization model of digital multi-beamforming for space-based ADS-B.Then,a coevolution method DECCG_A&A is proposed to enhance the optimization efficiency by using an improved adaptive grouping strategy.The strategy is based on the locations of uncovered areas and the aircraft density under the coverage of each beam.Simulation results show that the update interval can be effectively controlled to be below 8 seconds compared with other existing methods,and DECCG_A&A is superior in convergence to the Genetic Algorithm(GA)as well as the coevolution algorithms using other grouping strategies.Overall,the proposed optimization model and method can significantly reduce the update interval,thus improving the surveillance performance of space-based ADS-B for air traffic control.

关 键 词：Adaptive grouping strategy Air traffic control Co-channel interference Coevolution algorithm Digital multi-beamforming Space-based Automatic Dependent SurveillanceBroadcast(ADS-B) Update interval 

分 类 号：V355.1[航空宇航科学与技术—人机与环境工程] TN93[电子电信—信号与信息处理]