基于ADS-B和WEB的雷达精度分析系统

方位角、俯仰角、距离三维精度是三坐标雷达的重要技术指标,通常使用动态标校的方式进行标定;为解决动态标校试验周期长、成本高、难度大、在使用维护阶段难以实施等问题,文章介绍了一种基于广播式自动相关监视系统(ADS-B)的雷达精度准实时分析系统;文章从ADS-B数据率、位置精度、最大可接收距离等多个方面探讨了民航航迹用于雷达动态精度分析的可行性;采用Django框架设计、实现了WEB架构的雷达精度准实时分析系统;并使用高精度雷达对系统进行了验证、标定、系统误差补偿;最后,系统在某中远程雷达上进行多个批次测试,结果表明该方法有效且可行。

Beyond the Façades in Tehran:When Tradition Meets Innovation

Over time,the traditional house in central Iran,which Tehran geographically belongs to,has undergone deep physical and morphological changes as a result of technological,social and economic transformations,passing from the characteristics of an introverted house enclosed by walls overlooking an inner courtyard to the multi-storey condominium with an extroverted outlook.Here the façade becomes a key element:it is a threshold between urban and private,outdoor and indoor.The article shows a mosaic of patterns and materials of the new mid-rise residential building façades via photographs and diagrams to emphasize the strict connection between contemporary design and local tradition.

The Development of a Smart Mobile App for Building Façade Defects Inspections

The manual visual inspections of façade building defects are posing a high and increasing cost for building asset managers,particularly when inspections delay projects or require asset outages,visits to decommissioned sites or work within hazardous environments.This paper reports on the development,testing and delivery of a working mobile app prototype to facilitate the inspections and documentation of building facade condition monitoring.The work presented builds upon the development of an online platform for remote building inspection based on the integration of methodologies and tools,including VR(virtual reality),and digital photogrammetry to collect real-time data that support automated decision making.The mobile app:(i)allows the user to import 3D models and 2D building plans;(ii)provides the means of first-person exploration of models via a VR headset;and(iii)captures,records and catalogues images of façade defect types,and the date and time.An inspection case study was used to demonstrate and evaluate the mobile app prototype.The Building Inspector app allows building professionals to manage inspections and to track past and ongoing monitoring of the condition of building façades.

Solutions for the Rehabilitation of Historical Building Facades with Local Materials

The present research aims to identify the possibilities of rehabilitation of building facades in the centre of Chisinau, through the use of high-performance materials, use of high-performance technologies in execution, reduction of facade renovation costs, etc. In the process of organising the rehabilitation works of historical buildings of architectural value, we are dealing with the following: the value of the rehabilitation works of a historical building is very high, the duration of the rehabilitation is important, the attitude of the society is insufficient, the lack of strategies for the rehabilitation of buildings at the municipality level. In order to achieve this objective, we propose to research the following tasks: definition of the concept of rehabilitation of buildings in the Historic Centre of Chisinau;legislative, normative assurance of rehabilitation of historical heritage in the Republic of Moldova;analysis of the situation in Chisinau on the example of historical buildings with limestone finishes and examination by non-destructive methods of facades;solutions for rehabilitation of facades of historical buildings by comparing two types of technologies. In conclusion, emphasis will be placed on the choice of the most efficient method in terms of material, technology and cost.

Applying Double Skin Facade with ETFE Membrane Assembly for Energy Saving and Acoustic Protection for the Building of the Czech Institute of Informatics,Robotics and Cybernetics in Prague

Multidisciplinary, integrated planning approach by architects, engineers, scientists and manufacturers to reduce energy consumption of buildings. The CIIRC Complex, located on the main campus of Czech Technical University in Prague consists of two buildings, newly constructed building and adaptive reuse of existing building. CIIRC—Czech Institute of Informatics, Robotics and Cybernetics is a contemporary teaching facility of new generation and use for scientific research teams. New building has ten above-ground floors, on the bottom 4 floors of laboratories, scientist modules, classrooms, above are offices, meeting rooms, teaching and research modules for professors and students. Offices of the rector are on the last two floors of the building. On the top floor is congress type auditorium, in the basement is fully automatic car park. Double skin pneumatic cushions facade. In the project are introduced series of architectural and technical features and innovations. Probably the most visible is the double skin facade facing south-transparent double layer membrane ETFE (Ethylen-TetraFluorEthylen) cushions with triple glazed modular system assembly. Acting as solar collector, recuperating of hot air on the top floors, saving up to 30% of an energy consumption.

The effects of cool materials,façade orientation,and morphological parameters on energy consumption at the residential neighborhood scale

Building surface cool materials are novel materials that can reduce urban heat island intensity and decrease building energy consumption.This study investigated the impact of radiative properties of materials,façade orientation,and morphological parameters on energy consumption in six typical residential neighborhoods in Nanjing,China.The neighborhood energy consumption of 16 application schemes considering the façade orientation factor is compared to determine the best energy-saving scheme.Seasonal and annual energy-saving rates,savings in electricity costs,and the price ceiling for materials per unit area are analyzed.The results show that for low-rise buildings,using cool materials only on the roof can reduce the annual energy consumption by 1%.When cool or super cool materials are also used on the building façade,the annual energy saving rate can be up to 3.4%and 4.3%,respectively.Using cool materials on the south façade of buildings is not recommended due to significant heat loss in winter.Considering savings in electricity costs and the price ceiling for materials per unit area,the price of cool and super cool materials should be less than 3.0 and 3.7 RMB/m2,respectively,assuming a lifespan of eight years in Nanjing.

Experiment and simulation to determine the optimum orientation of building-integrated photovoltaic on tropical building façades considering annual daylight performance and energy yield

Building-Integrated Photovoltaic(BIPV)on vertical façades is a potential PV application in today’s buildings.The performance of BIPV on façades is significantly influenced by the façade orientation.For tropical cities,the optimum façade orientation,in terms of maximum energy yield and daylight performance,cannot be simply determined,due to relatively symmetrical sun path throughout the day.This study therefore aims to determine the optimum orientation for BIPV on tropical building façades.To achieve the objective,experiment,modelling,and computational simulation are conducted to evaluate the BIPV energy yield and to predict the indoor daylight performance in a scale-model building with a 105Wp monocrystalline silicon PV,facing each cardinal orienta-tion in Bandung,Indonesia.The South orientation yields practically zero ASE_(1000,250),providing the best annual daylight performance,and yielding the most desirable value in four out of five daylight metrics.The greatest annual energy yield is at the North orientation,providing 179-186 kWh(95%prediction interval)per year,but with larger uncertainty compared to that at the South,due to direct sunlight occurrence.Based on three different objective functions,the South orientation is considered optimum for placing the BIPV panel on the prototype façade in the location.

Network of Architecture Roads

In the literature that follows the history and theory of architecture,architecture is mainly studied from the aspect of disposition,construction and materialization“in itself”,sporadically establishing the“originality”(first appearance)of certain dimensions of architectural solutions and their connection with solutions from previous historical epochs.The title of this work(Network of Architectural Paths)suggests the simultaneous uniqueness(authenticity)of people and their culture throughout the planet Earth and comprehensiveness(universality)of human ideas and all forms of human creativity.The aim of this work is to show the authenticity of ideas(expressed by architecture)in accordance with the concrete natural and social environment and,at the same time,their mutual connection(networking)on the global world level(Earth).Examples of vernacular architecture in various parts of the world and examples of author’s(contemporary)architecture in other parts of the world that are articulated in the language of the modern era while preserving the concepts of their vernecular“models”are thus compared.The methodological approach in this paper is based on the author’s theory of architecture,which he described and published in his book:Hadrovic,A.(2007).Defining Architectural Space on the Model of the Oriental Style CityHouse in Bosnia and Herzegovina,Serbia,Montenegro,Kosovo and Macedonia,Booksurge,LLC,North Charleston,SC,USA.

高速多通道并行AD采集卡的设计思路构架实践

在高速多通道并行AD采集卡设计过程中,需要根据数据采集系统的要求,明确高速多通道并行数据采集的具体需求,分析高速多通道并行AD采集卡的设计思路,同时准确掌握高速多通道并行AD采集卡架构的实际应用,以期为类似数据采集卡设计提供一定参考。

移动Adhoc网络的体系结构和分簇算法

Ad hoc网络是一种多跳移动自组织网络 ,它需要特殊的体系结构来支持路由、管理和其他网络功能。首先介绍了 Ad hoc网络的一些显著特点 ,然后详细分析了 Ad hoc网络的体系结构。接着介绍了一种性能较好的分簇算法并讨论了簇维护机制和码字分配等问题。

一种新型的Ad Hoc网络分簇算法及其性能仿真

现存的Ad Hoc网络分簇算法大都只考虑影响网络性能的某个方面的因素,因此这些分簇算法的应用场合非常受限。本文在现存分簇算法的基础上设计了一种考虑多方面因素的新型分簇算法,可以在一定程度上改善网络的性能,并且具有较强的通用性。首先介绍了分簇算法提出的背景和一些相关的定义和假设,然后说明了几种现存的分簇算法的不足。接着重点分析了一种性能较好的分簇算法—自适应按需加权分簇算法,最后通过模拟对该分簇算法与其它几种算法进行了性能比较和评价。

移动Ad hoc网络中的分簇算法

分簇算法即根据系统要求将节点组成可管理的集合 ,继而形成满足系统要求的合理的网络结构 ,它直接影响 Ad hoc网络的各种性能指标。首先阐述了 Ad hoc网络的体系结构和存在的问题 ,然后介绍了与分簇算法相关的一些定义和分簇算法的目标。接着对 Ad

Ad hoc网络按需加权分簇算法及其性能分析

该文在分析Ad hoc网络两种典型的分簇算法的基础上,综合考虑节点度,节点的能量和移动性等多方面因素,提出了1种适用于Ad hoc网络的按需加权分簇算法。采用按需策略作为簇结构的维护策略,提高了网络体系结构的稳定性,减少了计算和通信开销。仿真结果验证了此种分簇算法的优越性。

移动Ad Hoc网络的一种自适应权值分簇算法

为有效解决移动Ad Hoc网络簇结构的稳定性问题,提出了一种分簇算法.在流量均衡的基础上,综合考虑节点所处的网络环境和本身状态,根据适应性权值选择簇首,实现对随机分布的移动节点自适应动态分簇,并通过可用度来优化簇内的节点数.仿真测试表明,该算法在不增加开销的情况下,能适应性均衡簇首负载,有效防止簇首成为瓶颈.

一个基于层次结构的Adhoc网络移动模式

采用连通图中极小支配集概念对平面分布的Adhoc网络进行层次划分;提出移动节点之间的相关度概念,利用GM-BFS算法来实现Adhoc网络的簇结构生成。结果显示提出的分簇模式能较好地适应网络的扩展、簇生成算法具有收敛快的特征。

ad hoc网络中跨层设计方法的研究

ad hoc网络与传统有线和无线蜂窝网络有着显著的区别,基于传统的分层协议栈的设计方法不再适合adhoc网络,而应采用一种新型的跨层协议栈和跨层设计方法。本文首先阐述了adhoc网络的特点和传统的分层协议栈的弊端,介绍了跨层设计的概念。然后,详细分析了adhoc网络中跨层设计的方法,包括策略、体系结构和信令交互方式,探讨了跨层设计的相关技术和面临的挑战。最后,总结了全文并指出了今后的工作方向。

Ad hoc传感网络的体系结构及其相关问题

Ad hoc传感网络是一种特殊形式的传感网络。首先 ,简单介绍了 Ad hoc传感网络的概念、特点、目标和种类 ;然后 ,讨论了 Ad hoc传感网络的体系结构 ,接着对 Ad hoc传感网络的相关问题进行了详细的阐述和分析 ;最后 。

一个ad hoc网络中的簇结构模式

提出一种adhoc网络中新的簇结构模式 采用约束特征值的概念对adhoc网络中节点移动的约束环境进行数学抽象 ,定义了节点属性的数学表达式 以节点的通信能力值和状态变化值作为选择簇头节点的依据 ,在此基础上提出了分簇算法GM BFS ,对平面adhoc网络进行分簇 。

移动Ad hoc网络服务发现协议

介绍移动Ad hoc网络的应用前景和主要研究内容,阐述服务协议的重要性以及服务发现协议中的基本概念,针对现有的移动Ad hoc网络服务发现协议的核心技术和设计思想进行分析,选取几种典型的服务发现协议进行对比,总结得出各类服务发现协议的优缺点和适用范围,并指出该领域的进一步研究方向。

Ad hoc网络中一种基于稳定的网格多路径路由算法

移动自组网络的路由算法往往采用传统的单路径路由方式,每次路由发现泛洪都会伴有大量路由包的丢弃以及路由负载和路由延迟的增加,大大降低路由算法的性能。为解决这些问题,提出了一种基于稳定的网格多路径路由算法SGMR.该算法充分利用网格中节点的位置信息,有效限制路由查询包的泛洪区域,并结合预测策略和节点不相交路径策略来选择多条稳定的节点不相交路由。模拟结果显示,与传统的单路径路由算法LAR和AODV相比,SGMR算法可以有效提高数据包投递成功率,降低路由平均延迟和路由负载。