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页数:5页
时间:2019-08-26
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1、2008年秋冬学期研究生专业英语期末考试试卷参考答案1.TranslatethefollowingwordsorphrasesintoChinese①Metric度量②Convergence收敛③Covariance方差④Stochastic随机⑤Equivalence等价⑥Dynamicequation动态方程⑦Criteria判据、评价标准⑧MeasurementModel测量模型⑨Partialderivativeequation偏微分方程⑩Inthesenseofprobability在概率意义上,依概率2.ExplainthefollowingsymbolsinEnglis
2、h①thesecondorderderivativeofsub,bdoubleprimesubm②isequivalentto③approaches④thepartialderivativeofwithrespectiveto⑤integralbetweenlimitsto⑥a‖bisparallelto⑦thecuberootof⑧setiscontainedin⑨plusminusmultiplied,alldividedbyequals⑩foranyspecial,thereisarespected,suchthatapproachesasapproaches二、Transla
3、tethefollowingparagraphsintoChineseParagraphA[8Points]Asubsetissaidtobeboundedifthereexistssuchthatforall.ThediameterofAisdefinedtobe.AboundedmetricspaceisoneforwhichXitselfisbounded.BoundedintervalsinRareboundedsets.Adiscretemetricspaceisbounded(take).译文:一个子集被称为是有界的,如果存在使得对所有有。的半径被定义为。有界度量空间是指
4、本身有界的空间。在上有界的区间是一个有界集。离散度量空间是有界的(取)ParagraphB[8Points]Ingeneral,itisnotrequiredthatthereferencedynamicmodelbeexactlythesameasthetruthdynamicsorthatthemodelingparameterbeequivalenttothetruemodelingvector.ThisnotationisleftinplacetosimplifythederivationoftheKalmanfilterformulation.Anumberofinnova
5、tiveapproacheshavebeendevelopedforadaptingreferencemodelparameterstoimprovefidelity(逼真度)withtheunknownreal-worldsystemmodelandcanbeusedtoenhancefilteroperation.译文:一般来说,并不需要参考动态模型与实际动态模型完全相同,或模型参数与实际模型矢量相等。这个记号保留下来只是为了简化Kalman滤波公式的推导。大量的改进方法也已被开发出来用于调整参考模型的参数使其与未知的实际系统更接近,这些方法也能被用于增强滤波器运行效果。Para
6、graphC[8Points]ItiscommonlyheldamongdesignersofKalmanfiltersthattheimplementationoftheformulaslistedaboverepresentsonlyaportionoftheeffortrequiredtodevelopanaccurateandrobustKalmanfilterapplication.Oncethedynamics,measurements,andpartialderivativeshavebeencoded,thetaskremainedistotunethenoisema
7、gnitudesrepresentedintheprocessnoisecovarianceQandthemeasurementnoisecovarianceR.Whilethemeasurementnoisecanbebasedinrealistichardwareperformancespecifications,theprocessnoiseisoftenusedasatuningparametertoensurethatthefilteropera
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