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实时校正模型的抗差递推算法*; Robust recursive algorithm for real􀀁time co􀀁 correction model
赵超 ; 洪华生 ; 张珞平 ; ZHAO Chao ; HONG Hua Sheng ; ZHANG Luo Ping
2008-05
关键词校正模型 抗差理论 递推算法 遗忘因子 co􀀁correct ion model robustness recursive algorithm forgetting factor
英文摘要[摘要]:利用遥测系统实时监测水情资料, 由于遥测系统自身的原因以及水文要素测量的具 体要求, 数据常常携带异常误差. 采用有异常误差的实测流量资料对实时校正模型进行参数辨 识, 要求算法既能抵御异常误差的影响, 又具有较强的实时跟踪能力, 以适应实时洪水预报的 要求. 在递推最小二乘算法的基础上, 引入抗差理论, 削弱异常值对参数估计的影响; 引入遗忘 因子, 实时跟踪模型时变参数的变化. 计算实例表明, 带有遗忘因子的抗差递推最小二乘算法 对异常误差不敏感, 又具有较强的实时跟踪能力.[Abstract]:Data observed by telemetric system often carries outliers resulting from instrument malfunctioning, false signal acquisit ion because of signal leak, collision and disturbance during signal transmission, and special measuring demand of hydrologic variable, in addition to unavoidable random errors. When the parameters of realt ime cocorrection model are estimated by the abnormal data, the algorithm must not only be able to resist the effect of the outliers, but also have ability for realtime tracing of the changes of parameters. In this paper, a robust recursive least squares algorithm with a forgetting factor is produced based on the recursive least squares algorithm. And an example is given to demonstrate that the algorithm is insensitive to the outliers and adapts to the timevarying parameter estimation.; 国家自然科学基金项目( 40701178) 资助
语种中文
出版者《中国科学院研究生院学报》编辑部
内容类型期刊论文
源URL[http://dspace.xmu.edu.cn/handle/2288/1150]  
专题海发院-已发表论文
推荐引用方式
GB/T 7714
赵超,洪华生,张珞平,等. 实时校正模型的抗差递推算法*, Robust recursive algorithm for real􀀁time co􀀁 correction model[J],2008.
APA 赵超,洪华生,张珞平,ZHAO Chao,HONG Hua Sheng,&ZHANG Luo Ping.(2008).实时校正模型的抗差递推算法*..
MLA 赵超,et al."实时校正模型的抗差递推算法*".(2008).
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