Biamp Nexia 技术白皮书解析

NSA技术白皮书NSA技术白皮书2010 – 01 – 27目录1. 引言 (1)1.1 背景 (1)1.2 定义 (1)2. NSA产品概述 (2)3. 透视模块 (4)3.1 相关技术介绍 (4)3.2 功能描述 (4)3.3 相关截图 (5)4. 安检模块 (8)4.1 相关技术介绍 (8)4.2 相关截图 (8)5. 优化模块 (10)5.1 相关技术介绍 (10)5.2 功能描述 (10)6. 流量分析模块 (11)6.1 功能介绍 (11)6.2 相关截图 (11)7. 流控模块 (13)7.1 相关技术介绍 (13)7.2 功能描述 (13)8. 除盲模块 (14)8.1 相关技术介绍 (14)8.2 功能描述 (14)8.3 相关截图 (14)9. 桌面管理模块 (16)9.1 相关技术介绍 (16)9.2 功能模块 (16)10. WEB图形用户界面 (17)10.1 功能介绍 (17)10.2 相关截图 (17)1. 引言1.1背景在信息化时代的激烈竞争环境中，网络与信息系统已成为几乎所有具有一定规模的用户正常生存运作和决策不可或缺的基础保障之一，是维持竞争力和效益的重要保证。

这些用户包括了企业、政府、大学、电信运营商、金融行业如银行和证券公司、大中型数据中心等。

因此，如何保证整个系统的正常运转，信息资源的高效、安全及合理的利用，网络系统的合理扩展，应用系统的平稳升级，成为管理人员对所在单位必须负起的最重要的职责。

随着网络与信息系统的功能与复杂度的日渐增加，管理人员面临着日益严峻的挑战，因而迫切需要工具的帮助。

目前市场上其他公司的管理产品一般都是偏重于内网基础设施管理的通用性产品，其功能侧重于监控网络基础设施和发现应用服务是否在线，都缺乏现代IT管理所需的其它许多重要功能。

如对应用服务质量的监控严重不足，尤其缺乏在网络边界处的管理解决方案，如流量监测、控制与优化，数据流带宽管理，网络异常流量检测与过滤等的安全管理。

Ansoft用于射频、模拟和混合信号电路设计的新一代仿真器- 白皮书简介Nexxim是Ansoft新一代电路仿真工具，能够快速精确地仿真复杂和大规模的模拟和混合信号电路。

它不仅提供了敏感的模拟和无线前端电路晶体管级的仿真精度，还具有针对现代复杂的混合信号集成电路的空前的仿真能力。

在进行板级仿真及模拟射频电路分析时，Nexxim可以采用同样的器件模型和单一的网表同时进行时域和谐波平衡仿真。

Nexxim是新的数值算法与现代软件工程技术相结合的产物，与现有其它商业软件工具相比，在仿真速度、精度和仿真能力方面有巨大的飞跃。

它与Hspice网表格式完全兼容，支持所有的Foundry器件模型，能够完全地集成到当前广泛采用的EDA设计流程中；它可以和电磁场仿真工具HFSS进行动态连接和协同仿真，实现片上无源部件和集成电路封装的精确建模；它与Ansoft Designer设计环境完全集成，实现原理图输入、网表生成和编辑、仿真、与系统仿真和平面电磁场仿真的动态连接及结果的后处理。

本文将着重介绍Nexxim的仿真能力、技术优势及其在射频/混合信号集成电路设计流程中的应用。

首先，概述业界发展的趋势及在现代电路仿真与设计中的需求；然后介绍Nexxim的几个应用实例，包括2.4 GHz锁相环、完整的蓝牙®接收机、强非线性的分频器电路和模拟数字转换器电路的设计，讨论Nexxim在混合信号电路设计流程中的应用，最后总结Nexxim独有的特点和技术优势。

Nexxim为射频和混合信号集成电路设计及高性能信号完整性应用提供了无以伦比的仿真能力、灵活性、适应性、仿真精度和速度。

图1 Nexxim应用于2.4GHz 锁相环电路的仿真多种力量推动着半导体的增长主要有五种力量推动着当今半导体工业。

表一列出了这些推动力和典型应用，这些典型应用的一个共同主题是在工作速度很高的情况下同时采用模拟和数字电路，敏感的射频和模拟电路经常和数字信号处理电路工作在同一块芯片上，不仅使得芯片的晶体管数量大大增加，而且电路的数字和模拟部分的耦合也大为增强。

BETTER COMMUNICATION ｜ GREATER VALUEIEC’s outlookinto the futureBased on an overview of the IEC white papers 未来已来 我们全力以待！——全方位解读IEC白皮书By Vincent Sun 孙加顺IEC is known as the home for industry and the “united nations of technologies” as the organization has been committed to the development of international standards for electric and electronic products, systems and services, collectively known as electrotechnology. Products and systems become increasingly sophisticated when technologies develop faster and faster, for which standards are playing a more vital role and embracing unprecedented challenges.Therefore, it is reasonable for this consensus body not only to solve existing problems in traditional arenas but also to look at the issues of emerging industries and future societies. Gathering leading minds of the industry, IEC has been closely focusing on the development trends of science and technology in a bid to update or develop standards for application of technological results, and the typical observations and prospects are published as white papers.As a form that differs from international standards, white papers together with technology reports at IEC are drafted and developed by the Market Strategy Board (MSB), which as one of the three pillar organs (Standardization Management Board, Market Strategy Board, Conformity Assessment Board) of the organization reports to the Council Board (CB) and identifies the principal technological trends and market needs in the IEC’s fields of activity.Portfolio of the IEC white papersAccording to the IEC, MSB is designated to set strategies to maximize input from primary markets and establish priorities for the technical and conformity assessment work of the IEC, improving its response to the needs of innovative and fast-moving markets. It may establish Special Working Groups (SWGs) under the leadership of a MSB member to investigate certain subjects in depth or to develop a specialized document. So far, the IEC/MSB has officially published 11 white papers and 2 technology reports.Grid integration of large-capacity Renewable Energy sources and use of large-capacity Electrical Energy Storage The Renewable and Sustainable Energy Institute (RASEI) at the University of Colorado at Boulder (CU-Boulder),the National Renewable EnergyLaboratory (NREL),State Grid Corporation of China (SGCC)Coping with the Energy Challenge The MSB Special WorkingGroup on electrical energyefficiency,the leadership of ClaudeBreining from SchneiderElectricEdge intelligence2017the MSB edge intelligenceproject team,Huawei,the Fraunhofer Institute for OpenCommunications Systems FOKUS2017LVDC: electricityfor the 21stcentury2013Nanotechnologyin the sectors ofsolar energy andenergy storage2014Orchestrating infrastructurefor sustainable Smart CitiesThe MSB project team on smartcities,Centre for European PolicyStudies (CEPS)Global energy interconnection2017The MSB global energyinterconnection projest team,the International EnergyAgency (IEA),State Grid Corporation ofChina (SGCC)2014Internet of Things: WirelessSensor NetworksThe MSB wireless sensornetworks project team,the US National Institute ofStandards and Technology (NIST),CTOs of leading internationalorganizationsMicrogrids for disasterpreparedness and recovery2014The MSB project team on microgriddisaster preparedness and recovery,the Commonwealth Scientific andIndustrial Research Organization ofAustralia (CSIRO),the Japanese National Institute ofAdvanced Industrial Science andTechnology (AIST)BETTER COMMUNICATION ｜ GREATER VALUEFrom the above table, we can see that the white papers of the IEC focus around the key working areas of the organization, i.e. electrical energy, power storage and grid technology, future manufacturing and Internet of Things.The first white paper Coping with the Energy Challenge published in 2010 is believed to lay the foundation for the electrical energy efficiency discussion, with a model projecting to address the next 20 years based on the wide array of energy efficiency opportunities and technologies available. It summarizes situations for a roadmap for the international standardization to “enable highest short- and long-term energy efficiency outcomes, today and tomorrow”.This is followed by a series of white papers further road-mapping the technological and standards prospects on the storage, grid and interconnection of electricity. For example, Electrical Energy Storage summarizes “present and future market needs, reviews their technological features, and finally presents recommendations for all EES stakeholders” while the document also provides market guidance for the work of the IEC in support of this industry. Grid integration of large-capacity Renewable Energy sources and use of large-capacity Electrical Energy Storage specifically addresses the increasing presence and influence of renewable energies by looking at the grid integration technologies and difficulties at a global view.Microgrids for disaster preparedness and recovery is actually based on the risk-based mind by “encouraging the operation of microgrids and the implementation of standards to assist disaster relief planning”, to contribute to disaster preparedness and recovery in case of major electricity outage. Strategic asset management of power networks considers the necessity of international standards for power networks since this sector faces a period of profound change for such assets at different levels, ultimately relating to the secure supply of electrical energy. Global energy interconnection discusses the potential of global coordination and balance of electrical energy which can be highly complex and difficult, but fit for the needs of societal development.Other than electricity, the white papers show a natural inclination toward the prospects about the future of industry and infrastructure, which has also been the logical focus of the IEC to keep the system running with technological efficiency. Internet of Things, the future of the physical world, is obviously a priority for the technology circle. IEC publishes two white papers, Internet of Things: Wireless Sensor Networks and IoT 2020: Smart and secure IoT platform, addressing the application of WSNs and next generation platform-level technologies, both involving the discussion of standardization needs and plans. Smartness will be the core of both manufacturing and social operation. That’s why it is so important to employ standards to ensure efficiency and benefits for future cities and factories as highlighted in Orchestrating infrastructure for sustainable Smart Cities and Factory of the future.Contribution of the industryThe IEC family was joined by more than 20,000 experts from leading companies, institutes and organizations from around the globe. The experts not only share the cutting edge technological results and best practices, but also cooperate closely in a systematic and coordinated manner. What they do are also reflected in the development of white papers.Normally, there are projects or special working groups set up in the IEC/MSB for tracking and watching over specific areas of technological development. The white papers are prepared by such technical bodies, yet with enormous support from the industry, institutes and organizations.Those participating minds are ostensibly world-leading in those areas. For example, the Fraunhofer Institute standing for the cutting-edge technologies contributes to the development of Electrical Energy Storage, Factory of the future and Edge intelligence. State Grid Corporation of China (SGCC) standing for the national grid maintainer has provided support in the documentation of Grid integration of large-capacity Renewable Energy sources and use of large-capacity Electrical Energy Storage and Global energy interconnection.Other industry giants like Schneider Electric and Huawei also contribute to the white papers based on their advantages. Experts from national or international organizations have played a vital role in addressing issues concerned in their respective areas. The participation into such cooperation somehow reflects the technological strengths and global influence of different countries or organizations.IEC’s outlook into the futureThe above analysis may shed a light on the prospects of this international organization that the future of industry and society will still have to do with two major pillars, energy and communication, both posing challenges for the infrastructure preparedness.For the future, according to the white papers, the increasing population and expanding urban population will mean more pressure on energy and related infrastructure. Resilience and sustainability will be considered the core principles for the environment of human development. Technology will provide potential paths for addressing existing or emerging issues.Standards are considered the fundamental layer basis for systems. In the system of a factory or even a city, standards play a central role in ensuring the coordination and interoperability. With technology progressing faster, international standards become even more important for the emerging global interconnection. IEC as an international organization possesses the capability and bears the responsibility to contribute to making the world a better place to live.From the white papers, we can see the future through the intelligent prospects of the IEC.Reference:1. https://www.iec.ch/whitepaper2. IEC white papers & technology reports。

布罗迪报告是一份关于人工智能和机器人技术的评估
报告，由美国总统科学技术顾问委员会（PCAST）发布。

该报告主要关注人工智能和机器人技术对美国经济和国家安
全的影响，并提出了政策建议和行动计划。

以下是布罗迪报告的主要内容：经济影响：报告指出，人工智能和机器人技术将对美国经济产生重大影响，包括提高生产效率、降低成本、改变就业结构等方面。

同时，这些技术也将对某些行业产生负面影响，例如低技能岗位的减少和劳动力市场的不平等。

国家安全：报告认为，人工智能和机器人技术将成为未来战争和冲突的重要手段，对美国的国家安全构成威胁。

报告指出，这些技术可能被用于网络攻击、军事侦察和自主武器等方面，因此需要采取措施加强国家安全。

政策建议：报告提出了多项政策建议，包括加强人工智能和机器人技术的研发和创新、提高技术标准和安全性、加强国际合作等。

同时，报告还建议政府加强对这些技术的监管和管理，避免出现负面影响。

总的来说，布罗迪报告认为人工智能和机器人技术将对美国经济和国家安全产生重大
影响，需要采取措施应对这些影响。

同时，报告也强调了加强国际合作的重要性，以促进这些技术的发展和应用。