简介:Inthenormaloperationcondition,aconventionalsquare-rootcubatureKalmanfilter(SRCKF)givessufficientlygoodestimationresults.However,ifthemeasurementsarenotreliable,theSRCKFmaygiveinaccurateresultsanddivergesbytime.ThisstudyintroducesanadaptiveSRCKFalgorithmwiththefiltergaincorrectionforthecaseofmeasurementmalfunctions.Byproposingaswitchingcriterion,anoptimalfilterisselectedfromtheadaptiveandconventionalSRCKFaccordingtothemeasurementquality.Asubsystemsoftfaultdetectionalgorithmisbuiltwiththefilterresidual.Utilizingaclearsubsystemfaultcoefficient,thefaultysubsystemisisolatedasaresultofthesystemreconstruction.Inordertoimprovetheperformanceofthemulti-sensorsystem,ahybridfusionalgorithmispresentedbasedontheadaptiveSRCKF.Thestateanderrorcovariancematrixarealsopredictedbythepriorifusionestimates,andareupdatedbythepredictedandestimatedinformationofsubsystems.Theproposedalgorithmswereappliedtothevesseldynamicpositioningsystemsimulation.TheywerecomparedwithnormalSRCKFandlocalestimationweightedfusionalgorithm.ThesimulationresultsshowthatthepresentedadaptiveSRCKFimprovestherobustnessofsubsystemfiltering,andthehybridfusionalgorithmhasthebetterperformance.Thesimulationverifiestheeffectivenessoftheproposedalgorithms.
简介:文章从《STCW95公约》对船员在语言方面的新要求出发,联系目前航海院校英语教学实际,提出了航海院校英语教学改革的对策。
简介:随世界和我国邮轮旅游的快速发展,我国高等院校应抓住契机,加强国际邮轮乘务专业教育,要认清当前我国国际邮轮乘务专业教育现状和任务,帮助在校邮轮乘务专业学生明确国际邮轮乘务的国际属性,努力加强其语言和跨文化课程的教学和心理的自律,增强该专业学生跨文化适应和服务能力的培养。摘要:随世界和我国邮轮旅游的快速发展,我国高等院校应抓住契机,加强国际邮轮乘务专业教育,要认清当前我国国际邮轮乘务专业教育现状和任务,帮助在校邮轮乘务专业学生明确国际邮轮乘务的国际属性,努力加强其语言和跨文化课程的教学和心理的自律,增强该专业学生跨文化适应和服务能力的培养。