| 减小双轴旋转惯导中陀螺仪随机漂移影响的方法研究 |
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| 引用本文： | 姜睿,杨功流,周潇.减小双轴旋转惯导中陀螺仪随机漂移影响的方法研究[J].导航定位于授时,2016(4):25-29. |
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| 作者姓名： | 姜睿 杨功流 周潇 |
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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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| 摘 要： | 针对双轴旋转惯导惯性器件的随机误差无法在导航过程中自动进行补偿的问题,提出优化的两位置重调(TPR)的方法来补偿系统的随机误差导致的方位和位置误差,以提高双轴旋转惯导的长航时精度.与传统两位置重调(CPR)方法相比,使用优化的误差传递方程的两位置重调的方法,可以在少于6h条件下估计出系统的方位误差,从而使得系统的位置精度和方位精度都得以极大的提高.根据惯性器件的随机误差导致的方位误差的特性,建立了TPR的误差模型.通过仿真,证明了该方法的有效性.
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| 关 键 词： | 两位置重调 双轴旋转 随机误差 |
Research on Reducing the Influence of Stochastic Error of Gyros in a
Dual Axis Rotational Inertial Navigation System |
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| JIANG Rui,YANG Gong liu and ZHOU Xiao.Research on Reducing the Influence of Stochastic Error of Gyros in a
Dual Axis Rotational Inertial Navigation System[J].Navigation Positioning & Timing,2016(4):25-29. |
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| Authors: | JIANG Rui YANG Gong liu and ZHOU Xiao |
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| Institution: | School of Instrumentation Science and Opto electronics Engineering, Beihang University,School of Instrumentation Science and Opto electronics Engineering, Beihang University and School of Instrumentation Science and Opto electronics Engineering, Beihang University |
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| Abstract: | The stochastic errors of inertial sensors in a dual axis rotational inertial navigation system are not averaged out automatically during navigation. Therefore an optimized Twice Position fix Reset (TPR) method is provided to enhance accuracy of a dual axis rotational INS by compensating stochastic errors. Compared with Conventional Position fix Reset(CPR) method, both an azimuth error and a radial position error are extremely corrected within 6 hours by the TPR method. An optimized error propagation equation has built on the characteristics of an azimuth error introduced by stochastic errors of an inertial sensor. As the result, accuracy of the system is prominently enhanced, as is verified by simulation |
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| Keywords: | Twice position fix reset Dual axis rotation Stochastic error |
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