| 单轴旋转调制技术对激光陀螺慢变漂移的抑制 |
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| 引用本文： | 张伦东,刘伟,练军想,吴美平.单轴旋转调制技术对激光陀螺慢变漂移的抑制[J].中国惯性技术学报,2011(5):515-520. |
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| 作者姓名： | 张伦东 刘伟 练军想 吴美平 |
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| 作者单位： | 国防科学技术大学机电工程与自动化学院; |
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| 摘 要： | 为了提高惯导系统长时间导航精度,采用旋转调制技术将惯性器件误差调制成周期性变化信号,抑制惯导系统误差发散.首先,基于惯性测量单元的误差模型,阐述了旋转调制技术的基本原理.然后,将激光陀螺慢变漂移建模成一阶马尔可夫过程,基于一阶马尔可夫过程的自相关函数,理论分析了旋转调制技术对激光陀螺慢变漂移的抑制.最后进行了仿真与试验...
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| 关 键 词： | 旋转调制技术 马尔可夫过程 激光陀螺 惯性导航系统 |
Depression of ring laser gyro drift using rotation modulation technique |
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| ZHANG Lun-dong,LIU Wei,LIAN Jun-xiang,WU Mei-ping.Depression of ring laser gyro drift using rotation modulation technique[J].Journal of Chinese Inertial Technology,2011(5):515-520. |
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| Authors: | ZHANG Lun-dong LIU Wei LIAN Jun-xiang WU Mei-ping |
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| Institution: | ZHANG Lun-dong,LIU Wei,LIAN Jun-xiang,WU Mei-ping(College of Mechatronics Engineering and Automation,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | To improve the precision of inertial navigation system(INS) during long time operation,the rotation modulation technique is employed to modulate the errors of the inertial sensors into periodically varied signals,and,as a result,to suppress the divergence of INS errors.First,based on the measurement error model of inertial measurement unit(IMU),the principle of the rotation modulation technique is expounded.Then,first-order Markov random error model is introduced for the time-correlated random drift of ring... |
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| Keywords: | rotation modulation technique Markov random process ring laser gyro inertial navigation system |
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