| 基于样条约束“EMBET”再入轨道测量数据融合方法 |
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| 引用本文： | 朱武宣,高耀文.基于样条约束“EMBET”再入轨道测量数据融合方法[J].飞行器测控学报,2005,24(6):49-53. |
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| 作者姓名： | 朱武宣 高耀文 |
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| 作者单位： | 北京跟踪与通信技术研究所,北京100094 |
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| 摘 要： | 针对再入轨道最小二乘交会解算方法数据利用率低、轨道解算精度差的问题,提出并实现了基于样条约束“EMBET”的再入轨道测量数据融合处理方法.该方法认为再入飞行轨道在时序上是相关的,可以利用三次B样条函数精确表示,建立了关于样条函数参数和测量系统误差的测量模型,从而大量压缩了待估参数数量,准确自校准系统误差,提高了轨道估算的精度和稳定性.
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| 关 键 词： | 样条函数 再入轨道测量 数据融合 EMBET |
| 收稿时间： | 2005-07-06 |
| 修稿时间： | 2005-08-22 |
A Data Fusion Method for Re-entry Ballistic Measurement with Spline Restraint EMBET |
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| ZHU Wu-xuan, GAO Yao-wen.A Data Fusion Method for Re-entry Ballistic Measurement with Spline Restraint EMBET[J].Journal of Spacecraft TT&C Technology,2005,24(6):49-53. |
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| Authors: | ZHU Wu-xuan GAO Yao-wen |
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| Institution: | Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094 |
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| Abstract: | Least square intersection re-entry ballistic calculation method has the disadvantage of inefficient data usage and poor ballistic calculation accuracy. The paper presents and realizes a data fusion method for re-entry ballistic measurement with spline restraint EMBET, The method considers that re-entry ballistic trajectory has great time correlation and can be approached by 3^nd-order B-Spline function. Observation model is established accordingly, System error can be self-calibrated accurately because of reduction of undetermined parameters. As a result, the accuracy and stability of the ballistic calculation are improved. |
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| Keywords: | Spline Function Re-entry Ballistic Measurement Data Fusion EMBET |
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