This article investigates industrial extension reqirements , analyze posix realtime specification , automotive electronic operating system specification and related meterials and mobile terminate development platform ( brew ) . it also depicts operating system extension requirement and important architectrue : vm + configuration + profile and serveral implementation solutions . according to the specific requirement for a project , the article gives design description of the project implementation based on deltaos 本文在研究嵌入式操作系统面向领域扩展的需求的基础上,剖析了posix标准的实时扩展规范、汽车电子行业的编程规范以及移动终端的一种平台接口( brew ) ;掌握了操作系统的扩展的具体需求,总结出了其扩展实现的基本结构: “虚拟机+配置+描述” ;研究了这种体系结构的几种实现技术。
System specifications such as total tfansmission distance , amplifier spacing , the number of wdm channels and the power per channel are all affected by the fiber nonlinear effects . therefore , studying on electromagnetic fields tfaveling in single mode fibers where anenuations , dispersions and nonlinear effects exist has absolutely significant theoretical and practical meanings 所以研究多信道光场在wdm通信系统用的有损耗、色散、非线性的光纤中的传输情况对于分析光纤非线性效应、提高光纤传输容量、改善wdm通信性能有着重要的理论和实践意义。
System specifications such as total transmission distance , amplifier spacing , the number of wdm channels and the power per channel are all affected by the fiber nonlinear effects . therefore , studying on electromagnetic fields tra veling in single mode fibers where attenuations , dispersions and nonlinear effects exist has absolutely significant theoretical and practical meanings 所以研究多信道光场在wdm通信系统用的有损耗、色散、非线性的光纤中的传输情况对于分析光纤非线性效应、提高光纤传输容量、改善wdm通信性能有着重要的理论和实践意义。