简介:简要介绍目前高速铁路基于定位的各类应用服务,重点阐述既有高铁列控系统的列车定位技术原理,对基于北斗卫星定位应用的下一代列控系统提出应考虑的卫星定位服务质量评价模型和相应的应用保障需求,为卫星定位行业在铁路列控应用方面提供需求发展方向。
简介:Inunderwatertargetdetection,thebottomreverberationhassomeofthesamepropertiesasthetargetecho,whichhasagreatimpactontheperformance.Itisessentialtostudythedifferencebetweentargetechoandreverberation.Inthispaperbasedontheuniqueadvantageofhumanlisteningabilityonobjectsdistinction,theGammatonefilteristakenastheauditorymodel.Inaddition,time-frequencyperceptionfeaturesandauditoryspectrafeaturesareextractedforactivesonartargetechoandbottomreverberationseparation.Thefeaturesoftheexperimentaldatahavegoodconcentrationcharacteristicsinthesameclassandhavealargeamountofdifferencesbetweendifferentclasses,whichshowsthatthismethodcaneffectivelydistinguishbetweenthetargetechoandreverberation.
简介:文章通过分析马克思主义哲学中国化的历史必然性、现实可能性,阐释马克思主义哲学中国化的实践基础,提出马克思主义哲学中国化面临的问题等方面对马克思主义哲学中国化主题进行了宏观解读。