| 一种改进的在线测量SINS陀螺常值漂移的方法 |
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| 引用本文： | 宫晓琳,房建成.一种改进的在线测量SINS陀螺常值漂移的方法[J].仪器仪表学报,2011,32(4). |
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| 作者姓名： | 宫晓琳 房建成 |
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| 作者单位： | 北京航空航天大学仪器科学与光电工程学院,北京,100191 |
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| 基金项目： | 国家973计划，国家自然科学基金，中央高校基本科研业务费专项资金 |
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| 摘 要： | 捷联惯性导航系统(SINS)中随时间变化的陀螺常值漂移是导致SINS导航误差的主要因素之一.在现有全监控方法的基础上,提出一种改进的在线测量SINS陀螺常值漂移的方法.利用短时间内监控陀螺常值漂移变化缓慢的特点,改进监控陀螺的旋转方案,在减少监控陀螺旋转次数提高效率的同时保证陀螺常值漂移的测量精度.详细介绍了其原理并进行了理论推导和误差分析,最后通过陀螺全监控和惯性导航半物理仿真实验验证了其有效性.仿真结果表明,该方法有效降低了实施的复杂性,同时使监控补偿后的陀螺漂移减小了一个数量级(均方根),惯性导航平面位置精度提高了近5倍.
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| 关 键 词： | 陀螺 监控 捷联惯性导航系统 陀螺常值漂移 |
Improved method for measuring gyro constant drift on line in SINS |
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| Gong Xiaolin,Fang Jiancheng.Improved method for measuring gyro constant drift on line in SINS[J].Chinese Journal of Scientific Instrument,2011,32(4). |
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| Authors: | Gong Xiaolin Fang Jiancheng |
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| Affiliation: | Gong Xiaolin,Fang Jiancheng(School of Instrumentation Science and Optoelectronics Engineering,Beihang University,Beijing 100191,China) |
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| Abstract: | Gyro constant drift that changes with time is one of the main factors of navigation error in strapdown inertial navigation system(SINS).An improved method based on existing all-monitor method for measuring gyro constant drift on line is proposed.The characteristic that gyro constant drift changes slowly in short time is used to improve the rotation scheme of the monitor gyro.The rotation times of the monitor gyro are decreased and the measurement precision is ensured at the same time.The principle and error... |
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| Keywords: | gyro monitor strapdown inertial navigation system gyro constant drift |
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