Conventional observation data,precipitation data from regional automatic stations,1°×1° NCEP reanalysis data and TBB pictures of FY-2C geostationary meteorological satellite as well as Doppler radar,etc...Conventional observation data,precipitation data from regional automatic stations,1°×1° NCEP reanalysis data and TBB pictures of FY-2C geostationary meteorological satellite as well as Doppler radar,etc.were utilized to analyzing the heavy precipitation process in Hunan Province from June 8 to 10.The results indicated that this heavy precipitation process was caused under the condition of western Pacific subtropical high jumped northward and fell southward rapidly,maintained and swung the shear line of low and middle-level atmosphere over long periods,and configurated temperature-moisture energy.Through analysis we found that precipitation period and precipitation area had a good corresponding to radar product and satellite TBB image,the high potential pseudo-equivalent temperature(θse) of low level and high convergence available potential energy(CAPE) area as well as ascending area of strong convergence.With the extension of effective forecasted period,the forecast location of T639 and EC on the western ridge points of western Pacific subtropical high became more and more easterly and the intensity became weaker and weaker,which had some deviations for forecasting heavy precipitation area.展开更多
在无线通信领域,信道状态信息负责指示通信链路的信道属性,它描述了信号在每条传输路径上的衰弱因子。信道状态信息(Channel State Information,CSI)可以使通信系统适应当前的信道条件,在多天线系统中为高可靠性高速率的通信提供保障。...在无线通信领域,信道状态信息负责指示通信链路的信道属性,它描述了信号在每条传输路径上的衰弱因子。信道状态信息(Channel State Information,CSI)可以使通信系统适应当前的信道条件,在多天线系统中为高可靠性高速率的通信提供保障。通信信道干扰测量的准确性会影响CSI性能,甚至影响调度和链路自适应性能。在新无线(New Radio,NR)系统中,用户设备(User Equipment,UE)所受到的干扰可能来自相邻传输和路由协议(Transport and Routing Protocol,TRP)或来自协作的TRP的交叉数据层。对于不同的场景,干扰来源可能会有很大的不同。文章主要讨论在NR系统中CSI的获取和报告面临的问题以及解决对策。展开更多
文摘Conventional observation data,precipitation data from regional automatic stations,1°×1° NCEP reanalysis data and TBB pictures of FY-2C geostationary meteorological satellite as well as Doppler radar,etc.were utilized to analyzing the heavy precipitation process in Hunan Province from June 8 to 10.The results indicated that this heavy precipitation process was caused under the condition of western Pacific subtropical high jumped northward and fell southward rapidly,maintained and swung the shear line of low and middle-level atmosphere over long periods,and configurated temperature-moisture energy.Through analysis we found that precipitation period and precipitation area had a good corresponding to radar product and satellite TBB image,the high potential pseudo-equivalent temperature(θse) of low level and high convergence available potential energy(CAPE) area as well as ascending area of strong convergence.With the extension of effective forecasted period,the forecast location of T639 and EC on the western ridge points of western Pacific subtropical high became more and more easterly and the intensity became weaker and weaker,which had some deviations for forecasting heavy precipitation area.
文摘在无线通信领域,信道状态信息负责指示通信链路的信道属性,它描述了信号在每条传输路径上的衰弱因子。信道状态信息(Channel State Information,CSI)可以使通信系统适应当前的信道条件,在多天线系统中为高可靠性高速率的通信提供保障。通信信道干扰测量的准确性会影响CSI性能,甚至影响调度和链路自适应性能。在新无线(New Radio,NR)系统中,用户设备(User Equipment,UE)所受到的干扰可能来自相邻传输和路由协议(Transport and Routing Protocol,TRP)或来自协作的TRP的交叉数据层。对于不同的场景,干扰来源可能会有很大的不同。文章主要讨论在NR系统中CSI的获取和报告面临的问题以及解决对策。
