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平台式惯导系统两点校的常值误差分析

, PP. 100-104

Keywords: 导航,综合校正,两点校,常值误差分析,平台式惯导系统

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Abstract:

为估计和补偿各种误差源引起的综合校正误差,针对平台式惯导系统综合校正中的两点校,从理论上分析了外部测量信息误差和惯性平台水平误差角对陀螺常值漂移综合校正效果的影响,推导了陀螺常值漂移误差限与校正时间间隔的关系,并对受外部测量信息误差影响的两点校过程进行了仿真。研究结果表明在目前的外部测量信息精度和平台水平精度下,两次重调的间隔时间为10h时,两类误差最大值的量级均为0.001(°).h-1;两点校对陀螺常值漂移的估计误差与两类误差均成线性关系;提高外部测量信息精度和惯性平台的水平精度是提高两点校精度的关键。

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