两步法快速解算编队卫星GPS模糊度

王海涛; 欧吉坤; 袁运斌

两步法快速解算编队卫星GPS模糊度

中国科学院测量与地球物理研究所动力大地测量重点实验室, 武汉 430077

基金项目: 国家自然科学基金资助项目(40674012);国家863计划资助项目(2007AA12Z305, 2007AA12Z311)

详细信息

作者简介:
王海涛(1979-),男,山东滕州人,博士生,whigg_wang@hotmail.com.

中图分类号: V 557.1
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- 被引次数: 0
出版历程
- 收稿日期: 2008-09-10
- 网络出版日期: 2009-09-30

Rapid resolution of GPS ambiguities of satellite formation flying with two-step method

Key Laboratory of Dynamic Geodesy, Institute of Geodesy & Geophysics of CAS, Wuhan 430077, China

摘要

摘要: 为克服卫星编队飞行实时相对定位中双频模糊度解算速度慢的缺点,结合扩展Kalman滤波(EKF,Extended Kalman Filter),首先采用少数个历元(如10个)相位平滑伪距相对定位结果与 L₆的平均值对滤波初始化,再根据两步法解算双频模糊度,即先解算并正确固定宽巷模糊度,获得较准确的基线分量估值,然后采用选权拟合方法,将基线分量作为约束条件解算并固定双频模糊度.仿真算例计算结果表明,当宽巷模糊度正确固定后,编队卫星间相对定位误差在5 cm以内,两步法可以在较短时间(约3 min)内固定双频模糊度,为精确解算编队卫星的相对状态提供保障.
- 卫星编队飞行 /
- GPS模糊度 /
- 相位平滑伪距 /
- 扩展Kalman滤波 /
- 选权拟合
Abstract: In order to rapidly resolve the carrier ambiguities of satellite formation flying, a two-step method combined with extended Kalman filter (EKF) was proposed. The first step is to fix the wide-lane ambiguities during the state estimation after initializing the filtering with carrier-smoothed-code algorithm and mean value of L₆. The second step is to calculate the float double-frequency ambiguities with the method of selecting the parameter weights using the baseline component as a constraint. The simulated case reveales that the baseline accuracy is within 5 cm after the wide-lane ambiguity was solved and the proposed method can correctly resolve the ambiguities within 3 minutes after the filtering initialization with 10 epochs observation.
- satellite formation flying /
- global position system(GPS) ambiguity /
- wide-lane combination /
- extended Kalman filter /
- selection of the parameter weights

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[1] Folta D, Bordi F, Scolese C. Considerations on formation flying separations for earth observing satellite missions Proc AAS/AIAA Spaceflight Mechanics Meet: Advances Astronautical Sci. San Diego: Univelt Inc, 1992: 803-822 [2] Atkins E, Pennecot Y. Autonomous satellite formation assembly and reconfiguration with gravity fields Robert A Profet. IEEE Aerospace Conference Proceedings. New York: IEEE, 2002: 783-795 [3] 赵军, 肖业伦. 用于对地观测定位的编队飞行卫星群轨道构形设计 [J].宇航学报, 2003, 24(6): 563-568 Zhao Jun, Xiao Yelun. Orbit configuration design of formation flying satellites to be used for earth observing and positioning [J]. Journal of Astronautics, 2003, 24(6): 563-568 (in Chinese) [4] Kroes R, Montenbruck O, Bertiger W, et al. Precise GRACE baseline determination using GPS [J] . GPS Solutions, 2005, 9(1): 21-31 [5] 马骏,肖业伦. 编队星座相对位置精确测定与自主定轨方法[J] . 北京航空航天大学学报, 2008, 34(6): 665-668 Ma Jun, Xiao Yelun. Autonomous orbit determination and precise measurement of relative position of formation constellation [J] . Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(6): 665-668(in Chinese) [6] Lemoine J M,Bruinsma S, Loyer S, et al. Temporal gravity field models inferred from GRACE data[J] . Advances in Space Research, 2007, 39(10):1620-1629 [7] Hwang P Y C. Kinematic GPS: resolving integer ambiguities on-the fly Proceedings IEEE PLANS. New York: IEEE, 1990: 579-586 [8] Kubo Y, Muto Y, Kitao S, et al. Ambiguity resolution for dual frequency carrier phase kinematic GPS Proceedings-Analog and Digital Techniques in Electrical Engineering. New York: IEEE, 2004: A661-A664 [9] 王海涛,欧吉坤,郭建锋. GPS相位平滑伪距严密定权及其在卫星编队飞行相对定位中的应用[J] .宇航学报,2007, 28(2): 282-286 Wang Haitao, Ou Jikun, Guo Jianfeng. Strict weight matrix definition of GPS carrier-smoothed code and its application to relative positioning of satellite formation flying[J] .Journal of Astronautics,2007, 28(2): 282-286 (in Chinese) [10] 欧吉坤. 测量平差中不适定问题解的统一表达与选权拟合法[J] .测绘学报, 2004, 33(4):283-288 Ou Jikun. Uniform expression of solutions of Ill-posed problems in surveying adjustment and the fitting method by selection of the parameter weights[J] .Acta Geodaetica Et Cartographic Sinica, 2004, 33(4) 33(4):283-288 (in Chinese) [11] 王振杰. 大地测量中不适定问题的正则化解法研究 .武汉:中国科学院测量与地球物理研究所,2003 Wang Zhenjie. Research on the regularization solutions of Ill-posed problems in geodesy . Wuhan: Institute of Geodesy and Geophysics,Chinese Academy of Sciences, 2003(in Chinese)

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