| GPS/INS组合系统空中对准方法研究 |
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| 引用本文： | 谭红力,黄新生. GPS/INS组合系统空中对准方法研究[J]. 航天控制, 2006, 24(5): 14-17 |
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| 作者姓名： | 谭红力 黄新生 |
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| 作者单位： | 国防科技大学机电工程与自动化学院,长沙,410073;国防科技大学机电工程与自动化学院,长沙,410073 |
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| 摘 要： | 针对单天线的GPS与捷联惯性导航组合系统,提出了一种空中对准方案,不同于传统的传递对准方法,仅依靠GPS测量信息进行速度匹配,完成空中初始对准。该方案采用扩展卡尔曼滤波方法解决对准过程中的非线性问题。仿真结果表明该方案的对准精度(1σ)可以达到水平姿态误差0.07,°方位误差0.3°。
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| 关 键 词： | 捷联惯导 GPS测速 空中对准 速度匹配 扩展卡尔曼滤波 |
| 文章编号： | 1006-3242(2006)05-0014-04 |
| 修稿时间： | 2006-05-15 |
A Method of Integrated GPS/INS System In-flight Alignment |
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| Tan Hongli,Huang Xinsheng. A Method of Integrated GPS/INS System In-flight Alignment[J]. Aerospace Control, 2006, 24(5): 14-17 |
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| Authors: | Tan Hongli Huang Xinsheng |
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| Abstract: | A method of in-flight self-alignment is presented for the integrated system of a single antenna GPS with a strapdown inertial navigation system(SINS).Different from the transfer alignment,it uses the GPS measurements for the velocity matching to achieve the in-flight alignment.To solve nonlinear problems caused by large attitude errors,the extended Kalman filtering(EKF) is used.Simulation result shows that the alignment accuracy was 0.07 degree for horizon attitude errors,and 0.3 degree for heading errors. |
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| Keywords: | SINS GPS velocity measurements In-flight alignment Velocity matching Extended Kalman filtering |
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