| 基于方位装订的弹载捷联惯导初始对准技术研究 |
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| 引用本文： | 石永生,汪渤,董明杰,高志峰.基于方位装订的弹载捷联惯导初始对准技术研究[J].弹箭与制导学报,2011,31(4):24-26. |
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| 作者姓名： | 石永生 汪渤 董明杰 高志峰 |
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| 作者单位： | 北京理工大学自动化学院,北京,100081 |
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| 摘 要： | 研究了基于方位装订的弹载捷联惯导系统的初始对准问题。首先推导了方位角误差和失准角误差的关系,在此基础上,提出了增加方位角误差作为观测量的观测方程,建立了基于方位装订条件下的卡尔曼滤波方程,并用奇异值分解的方法分析了系统的可观测性和不可观测状态变量,结果表明陀螺漂移均可观测,而加速度计零偏均不可观测;计算机仿真结果表明该初始对准方法收敛速度快,对准精度高。
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| 关 键 词： | 方位装订 捷联惯导 初始对准 奇异值分解 可观测度 |
Study on Initial Alignment Technology of Onboard SINS Based on Azimuth Setting |
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| SHI Yongsheng,WANG Bo,DONG Mingjie,GAO Zhifeng.Study on Initial Alignment Technology of Onboard SINS Based on Azimuth Setting[J].Journal of Projectiles Rockets Missiles and Guidance,2011,31(4):24-26. |
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| Authors: | SHI Yongsheng WANG Bo DONG Mingjie GAO Zhifeng |
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| Affiliation: | SHI Yongsheng,WANG Bo,DONG Mingjie,GAO Zhifeng(School of Automation,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | The initial alignment technology of onboard SINS based on azimuth setting was researched.First,the relationship between azimuth error and misalignment error was deduced.The observation equation by adding azimuth error as observable variable was introduced.The Kalman filter equation based on azimuth setting was designed.The observability and unobservable variables equation of the system were analyzed with the method of singular value decomposition.The result shows that all gyro drift is observable,all accele... |
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| Keywords: | azimuth setting SINS initial alignment singular value decomposition observability |
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