| 两种抗差估计在陀螺信号处理中的比较 |
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| 引用本文： | 蒋庆仙,马小辉,陈晓璧,王华.两种抗差估计在陀螺信号处理中的比较[J].测绘科学,2011,36(5):49-51. |
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| 作者姓名： | 蒋庆仙 马小辉 陈晓璧 王华 |
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| 作者单位： | 1. 西安交通大学机械工程学院,西安710049;西安测绘研究所,西安710054
2. 西安测绘研究所,西安,710054 |
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| 基金项目： | 基于多种时频分析的INS误差分析与补偿理论研究(41004013) |
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| 摘 要： | 捷联寻北仪中影响寻北精度的主要因素是陀螺随机漂移.由于陀螺信号中不可避免地存在异常观测或粗差,陀螺随机漂移中包含异常噪声(异常数据).抗差估计通过连续降权和连续减弱影响的方法抵制异常数据,是一种控制异常数据的有效方法.本文给出了两种抗差估计解及其相应原则,利用一个实际算例比较了两种抗差估计控制异常数据影响的能力.计算结...
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| 关 键 词： | 抗差估计 中位数 等价权 粗差 光纤陀螺 |
Comparison of two robust estimations applied to gyro signal |
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| JIANG Qing-xian,MA Xiao-hui,CHEN Xiao-bi,WANG Hua.Comparison of two robust estimations applied to gyro signal[J].Science of Surveying and Mapping,2011,36(5):49-51. |
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| Authors: | JIANG Qing-xian MA Xiao-hui CHEN Xiao-bi WANG Hua |
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| Institution: | ②(①School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an 710049,China;②Xi’an Research Institute of Surveying and Mapping,Xi’an 710054,China) |
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| Abstract: | In the strap-down gyro north seeker,the random drifts of gyro are primary factors to degrade orientation accuracy.The random drifts of gyro include abnormal noises(abnormal data) because abnormal observations or outliers inevitably exist in gyro signa1.Robust estimation is an effective method to control abnormal data by descending weights and weakening effects of abnormal data continuously.In the paper,the formulas of two robust estimations were presented and the abilities of controlling abnormal data were ... |
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| Keywords: | robust estimation median equivalent weight outlier FOG(Fiber Optic Gyroscope) |
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