| 分布逼近的卡尔曼滤波及其在星载GPS卫星定轨中的应用 |
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| 引用本文： | 吴江飞,黄珹. 分布逼近的卡尔曼滤波及其在星载GPS卫星定轨中的应用[J]. 天文学报, 2005, 46(1): 55-61 |
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| 作者姓名： | 吴江飞 黄珹 |
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| 作者单位： | 1. 中国科学院上海天文台,上海,200030;中国科学院研究生院,北京,100039;信息工程大学测绘学院,郑州,450052
2. 中国科学院上海天文台,上海,200030 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(KJCX2-SW-T1)国家863计划(2002AA731171)资助 |
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| 摘 要： | 探讨了利用推广卡尔曼滤波估计非线性系统状态时存在的问题，进而简要介绍了目前自动控制领域广泛使用的分布逼近的卡尔曼滤波UKF(Unscented Kalman Filter)，考虑到卫星定轨中系统的动态方程和量测方程存在严重非线性的情形，提出了将UKF用于星载GPS卫星定轨．实例计算结果表明，UKF的性能要优于推广卡尔曼滤波．
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| 关 键 词： | 星载 推广卡尔曼滤波 GPS卫星 状态 估计 性能 非线性 动态方程 |
| 修稿时间： | 2004-03-08 |
Unscented Kalman Filter and Its Application In GPS-Based Satellite Orbit Determination |
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| WU Jiang-fei HUANG Cheng. Unscented Kalman Filter and Its Application In GPS-Based Satellite Orbit Determination[J]. Acta Astronomica Sinica, 2005, 46(1): 55-61 |
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| Authors: | WU Jiang-fei HUANG Cheng |
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| Abstract: | It discusses the existing problem in using the Extended Kalman filter to estimate the state of one nonlinear system. And the Unscented Kalman filter is briefly introduced, which is widely used today in the field of automatic control. In the situation that the system dynamical equations and the measurement equations are highly nonlinear, the Unscented Kalman filter is brought forward to process the orbit of GPS-based satellite. A real example was performed, and the results show that the performance of the Unscented Kalman filter is superior to that of the Extended Kalman filter. |
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| Keywords: | celestial mechanics: Kalman filter GPS orbit determination |
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