星基ADS-B接收机监视容量分析
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摘要
星基广播式自动相关监视(ADS-B)系统是实现广域范围内航空器监视的重要技术手段。星基ADS-B系统内部存在严重的共信道干扰,共信道干扰限制了系统的监视性能。为了定量给出星基ADS-B接收机监视容量的计算方法,首先,给出了星基ADS-B系统的模型;随后,通过理论分析得到了星基ADS-B接收机报文冲突概率及报文正确接收概率,以此为基础理论,分析得出星基ADS-B接收机位置报文更新间隔及监视容量的计算方法;最后,构建了星基ADS-B仿真系统,仿真验证了理论计算公式的正确性。研究表明:星基ADS-B接收机的监视容量由飞机-卫星空天链路的误码率及ADS-B应用子系统所要求的位置报文更新间隔联合决定。
Satellite-based Automatic Dependent Surveillance-Broadcast(ADS-B)is an important technology for wide-area aeronautical surveillance.Experiments show that the surveillance performance provided by the satellite-based ADS-B system deteriorates seriously due to co-channel interference within the system.To quantitatively analyze the surveillance capacity of the satellite-based ADS-B system,a model for the satellite-based ADS-B system is developed.The collision probability and the correct reception probability of messages sent by the ADS-B transmitter of civil aircraft are theoretically derived.The update intervals of position messages and the surveillance capacity of the satellite-based ADS-B receiver are obtained.Simulation results verify the correctness of these theoretical results.Our study shows that the surveillance capacity of the satellite-based ADS-B receiver is jointly determined by the symbol error rate of the aircraft-satellite link and the required update interval of the ADS-B application subsystem.
Satellite-based Automatic Dependent Surveillance-Broadcast(ADS-B)is an important technology for wide-area aeronautical surveillance.Experiments show that the surveillance performance provided by the satellite-based ADS-B system deteriorates seriously due to co-channel interference within the system.To quantitatively analyze the surveillance capacity of the satellite-based ADS-B system,a model for the satellite-based ADS-B system is developed.The collision probability and the correct reception probability of messages sent by the ADS-B transmitter of civil aircraft are theoretically derived.The update intervals of position messages and the surveillance capacity of the satellite-based ADS-B receiver are obtained.Simulation results verify the correctness of these theoretical results.Our study shows that the surveillance capacity of the satellite-based ADS-B receiver is jointly determined by the symbol error rate of the aircraft-satellite link and the required update interval of the ADS-B application subsystem.
引文
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[3]ZHANG J,LIU W,ZHU Y.Study of ADS-B data evaluation[J].Chinese Journal of Aeronautics,2011,24(4):461-466.
[4]BLOMENHOFER H,PAWLITZKI A,ROSENTHAL P,et al.Space-based automatic dependent surveillance broadcast(ADS-B)payload for in-orbit demonstration[C]∥Advanced Satellite Multimedia Systems Conference.Piscataway,NJ:IEEE Computer Society,2012:160-165.
[5]DELOVSKI T,HAUER LC,BERHRENS J.ADS-B high altitude measurements in non-radar airspaces[J].European Journal of Navigation,2010,8(2):1-28.
[6]GUPTA O P.Global augmentation of ADS-B using Iridium NEXT hosted payloads[C]∥Integrated Communications,Navigation and Surveillance Conference.Piscataway,NJ:IEEE Computer Society,2011:1-15.
[7]FRANCIS R,NOEL J M,VINCENT R.Orbital monitoring of automatic dependent surveillance-broadcast(ADSB)signals for improved air traffic surveillance in remote and oceanic airspace[C]∥Proceedings of the 62nd International Astronautical Congress.Paris:IAF,2011:3111-3119.
[8]ITU.Working document towards a preliminary draft new report itu-rm.[ADS-B]-Reception of automatic dependent surveillance broadcast via satellite and compatibility studies with incumbent systems in the frequency band 1088.7-1091.3 MHz:Annex 12to Working Party 5B[R].Budapest:International Telecommunication Union,2015.
[9]Flight Safety Foundation.Benfits analysis of space-based ADS-B[EB/OL].(2016-06-29)[2017-11-11].http:∥flight safety.org/wpcontent/uploads/2016/10/ADS-B-report-June-2016-1.pdf.
[10]FRANCIS R,VINCENT R,NOEL JM,et al.The flying laboratory for the observation of ADS-B signals[J/OL].International Journal of Navigation and Observation,2011[2017-11-15].http:∥dx.doi.org/10.1155/2011/973656.
[11]DELOVSKI T,WERNER K,RAWLIK T,et al.ADS-B over satellite-the world’s first ADS-B receiver in space[C]∥Small Satellites Systems and Services Symposium.Berlin:DLR,2014:1-16.
[12]ALMINDE L,KAAS K,BISGAARD M,et al.GOMX-1flight experience and air traffic monitoring results[C]∥28th Annual AIAA/USU Conference on Small Satellites.Reston,VA:AIAA,2014:1-7.
[13]陈利虎,陈小前,赵勇.星载ADS-B接收系统及其应用[J].卫星应用,2016(3):34-40.CHEN L H,CHEN X Q,ZHAO Y.Satellite-based ADSB receiving system and application[J].Satellite Application,2016(3):34-40(in Chinese).
[14]MARK R.Aireon launch begins new era for satellitebased aircraft surveillance[EB/OL].New York:Flying Magazine,2017.(2017-01-18)[2017-11-11].https:∥www.flyingmag.com/aireon-launch-begins-new-era-forsatellite-based-aircraft-surveillance.
[15]DIEGO M.Globalstar's space-based ADS-B[EB/OL].(2014-09-19)[2017-11-11].https:∥www.globalstar.com/en/index.php?cid=6300.
[16]GARCIA M A,STAFFORD J,MINNIX J,et al.Aireon space based ADS-B performance model[C]∥Integrated Communication,Navigation,and Surveillance Conference.Piscataway,NJ:IEEE Computer Society,2015:C2-1-C2-10.
[17]PRYT R V D,VINCENT R.A Simulation of signal collisions over the north atlantic for a spaceborne ADS-B receiver using aloha protocol[J].Positioning,2015,6(3):23-31.
[18]MARTIN J P,GARCIA C E,FOLONIER M F,et al.Satellite ADS-B message collision simulation[C]∥VIII Conferencia Cientifica de Telecomunicaciones,2015:1-6.
[19]ABRAMSON N.The aloha system:Another alternative for computer communications[C]∥Fall Joint Computer Conference.New York:ACM,1970:281-285.
[20]RTCA.Minimum operational performance standards for air traffic control radar beacon system/mode select(ATCRBS/Mode S)airborne equipment:DO-181D[S].Washington,D.C.:Radio Technical Commission for Aeronautics,2008.