转发式测轨系统地面设备时延测量方法
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摘要
受地面设备时延误差的影响,转发式测轨系统的卫星定轨精度受到严重制约。为实现卫星精密定轨,地面设备时延误差的精确补偿至关重要,因此需要对地面设备时延进行精确测量。采用一种外环设备时延测量方法,实现对转发式测轨系统地面设备时延的实时测量。经过试验验证和分析,结果表明地面设备时延测量稳定度优于0.3ns,修正地面设备时延误差后的卫星重叠弧段的轨道差RMS值优于2m。
In transfer ranging system,the precision of satellite orbit determination is limited by the equipment time delay error of ground station.The accurate compensation of equipment time delay of ground station plays an important role in the precise satellite orbit determination.Thus the equipment time delay should be measured accurately.A method of outer loop equipment time delay measurement is introduced,which realizes the real-time measurement of ground station equipment time delay for transfer ranging system.By experiments and analysis,the results show that the accuracy of equipment time delay measurement can be better than 0.3 ns,meanwhile,the RMS value of the satellite overlap arc orbit difference can be better than 2 mafter compensating equipment time delay.
In transfer ranging system,the precision of satellite orbit determination is limited by the equipment time delay error of ground station.The accurate compensation of equipment time delay of ground station plays an important role in the precise satellite orbit determination.Thus the equipment time delay should be measured accurately.A method of outer loop equipment time delay measurement is introduced,which realizes the real-time measurement of ground station equipment time delay for transfer ranging system.By experiments and analysis,the results show that the accuracy of equipment time delay measurement can be better than 0.3 ns,meanwhile,the RMS value of the satellite overlap arc orbit difference can be better than 2 mafter compensating equipment time delay.
引文
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[2]曹芬.基于转发测距数据的GEO导航卫星定轨方法研究[D].西安:中国科学院国家授时中心,2014.Cao Fen.Research on precise orbit determination of GEOnavigation satellites based on transponder ranging data[D].Xi’an:National Time Service Center,Chinese A-cademy of Sciences,2014(in Chinese).
[3]李志刚,杨旭海,施浒立,等.转发器式卫星轨道测定新方法[J].中国科学G辑:物理学力学天文学,2008,38(12):1711-1722.Li Zhigang,Yang Xuhai,Shi Huli,et al.A new satellite orbit determination with transfer mode[J].Science in China Press Series G:Physics,Mechanics&Astronomy,2008,38(12):1711-1722(in Chinese).
[4]雷辉,李志刚,杨旭海,等.基于转发式的北斗卫星导航系统地球静止轨道卫星精密定轨试验[J].测绘学报,2011,40(s1):31-33.Lei Hui,Li Zhigang,Yang Xuhai,et al.Precise orbit determination experiment of Compass-GEObased on transponder ranging[J].Acta Geodaetica et Cartographica Sinica,2011,40(s1):31-33(in Chinese).
[5]Cao Fen,Yang Xuhai,Su Mudan,et al.Evaluation of C-band satellite orbit determination of geostationary earth orbit satellites based on Chinese area positioning system[J].Journal of Navigation,2014,67(2):343-351.
[6]Cheng Xuan,Li Zhigang,Yang Xuhai,et al.Chinese area positioning system with wide area augmentation[J].Journal of Navigation,2012,65(2):339-349.
[7]曹芬,杨旭海,李志刚,等.TWSTFT站间钟差残差与测站环境温度的相关性分析[J].时间频率学报,2013,36(3):148-155.Cao Fen,Yang Xuhai,Li Zhigang,et al.Analysis of correlation between clock offset and environmental temperatures of stations for TWSTFT[J].Journal of Time and Frequency,2013,36(3):148-155(in Chinese).
[8]李孝辉,杨旭海,刘娅,等.时间频率信号的精密测量[M].北京:科学出版社,2010.Li Xiaohui,Yang Xuhai,Liu Ya,et al.Precise measurement of time and frequency signal[M].Beijing:SciencePress,2010(in Chinese).
[9]张东明,朱春云,于华男,等.基于北斗卫星速度外推的GEO卫星速度解算方法[J].导航定位与授时,2018,5(1):68-75.Zhang Dongming,Zhu Chunyun,Yu Huanan,et al.GEO satellites velocities algorithm studies based on BeiDou satellites velocity extrapolation[J].Navigation Positioning&Timing,2018,5(1):68-75(in Chinese).
[10]郑辛,杨林.导航、定位与授时技术综述[J].导航定位与授时,2014,1(1):1-7.Zheng Xin,Yang Lin.Survey on navigation,positioning and timing technology[J].Navigation Positioning&Timing,2014,1(1):1-7(in Chinese).
[11]Zhao J,Li Z,Ge J,et al.The first result of relative positioning and velocity estimation based on CAPS[J].Sensors,2018,18(5):1528.
[12]黄承强.转发式卫星测轨地面站设备时延标定方法[D].西安:中国科学院国家授时中心,2015.Huang Chengqiang.Methods on calibration of equipment time-delay ofsatellite ground station for satellite orbit determination with transfer mode[D].Xi’an:National Time Service Center,Chinese Academy of Sciences,2015(in Chinese).
[13]黄承强,杨旭海,陈亮.卫星双向时间比对的设备时延标定方法[J].飞行器测控学报,2015,34(3):273-279.Huang Chengqiang,Yang Xuhai,Chen Liang.A calibration method of equipment time delay based on two-way satellite time comparison[J].Journal of Spacecraft TT&C Technology,2015,34(3):273-279(in Chinese).
[14]张升康,王学运,王宏博,等.卫星双向时间频率传递校准技术综述[J].宇航计测技术,2013,33(1):15-22.Zhang Shengkang,Wang Xueyun,Wang Hongbo,et al.Review of calibration techniques for two-way satellite time and frequency transfer system[J].Journal of Astronautic Metrology and Measurement,2013,33(1):15-22(in Chinese).
[15]Achkar J.Development of a Ku-band satellite simulator for TWSTFT applications[C]//European Frequency and Time Forum,2007.
[16]Achkar J.A new microwavesatellite simulator for the determination of delays in a TWSTFT station[C]//European Microwave Conference,2008.
[17]张艳梅,李峰,吴婵娟.一种新型双线极化BD2B3抗干扰天线设计[J].导航定位与授时,2017,4(4):82-86.Zhang Yanmei,Li Feng,Wu Chanjuan.A new design of dual-linear polarization anti-jamming antenna element for BD2B3[J].Navigation Positioning&Timing,2017,4(4):82-86(in Chinese).