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首页> 外文会议>Integrated Communications, Navigation and Surveillance Conference, 2009. ICNS '09 >The need and capability of a Surveillance Data Distribution System
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The need and capability of a Surveillance Data Distribution System

机译：监控数据分发系统的需求和能力

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The emergence of next generation technologies in Air Traffic Control (ATC) and the requirement to interface to existing sensor systems dictates the need for a Surveillance Data Distribution System (SDDS). What is a Surveillance Data Distribution System and what added capabilities does the platform offer? The distribution of surveillance data has its own unique requirements unlike the transport of generic data. An SDDS is a surveillance aware layer that sits on top of normal data transport network or cloud. Just as Voice-Over-IP (VOIP) has its own unique transport requirements to insure adequate efficacy, so does the transfer and distribution of surveillance data used for ATC and automation systems. Surveillance data is considered mission critical data essential for the tracking and operation of ATC systems. It has strict real-time requirements with regard to accuracy and latency, and must be highly available (redundant). It also must be capable of delivering the surveillance data to a variety of diverse users over a wide geographic area. In today's world, surveillance data is multicast over IP to a multitude of users ranging from the United States Air Force, Customs, Secret Service, and the Department of Homeland Security. Although the latency of the data is well within the 700 ms requirement of most ATC systems, anomalies such as duplicate messages create network bottlenecks and data loss due to lack of dynamic filtering to overcome bandwidth limitations. Additionally, the lack of surveillance data service monitoring limits visibility into the network to monitor and mediate that data usage. The capabilities of a Surveillance Data Distribution network address the following challenges: (1) Distribute data from multiple diverse sources (sensors) to multiple sinks (users). (2) Provide for dynamic and static load balancing to accommodate different bandwidth connections. (3) Provide services to validate, filter, and convert the data. (4) Provide a monitoring and control-n system that understands surveillance data, maintains technical performance metrics and provides alerts to quickly notify administrators when a problem occurs. These network enhancements increase data throughput and improve surveillance services while providing the bridge and foundation for future service-oriented architecture (SOA) initiatives.
机译：空中交通管制（ATC）中下一代技术的出现以及与现有传感器系统接口的要求决定了对监视数据分发系统（SDDS）的需求。什么是监视数据分发系统？该平台提供哪些附加功能？与常规数据的传输不同，监视数据的分布具有其自身的独特要求。 SDDS是位于常规数据传输网络或云之上的监视感知层。正如IP语音（VOIP）有其自己的独特传输要求以确保足够的功效一样，用于ATC和自动化系统的监视数据的传输和分发也是如此。监视数据被视为对ATC系统的跟踪和操作至关重要的关键任务数据。它在准确性和延迟方面有严格的实时要求，并且必须高度可用（冗余）。它还必须能够将监视数据传递给广泛地理区域中的各种用户。在当今世界中，监视数据通过IP多播到美国空军，海关，特勤局和国土安全部等众多用户。尽管数据的延迟完全在大多数ATC系统的700毫秒要求之内，但由于缺少动态过滤以克服带宽限制，异常消息（如重复消息）仍会造成网络瓶颈和数据丢失。另外，缺乏监视数据服务监视限制了对网络的可见性以监视和调解该数据使用情况。监视数据分发网络的功能解决了以下挑战：（1）将数据从多个不同的源（传感器）分发到多个接收器（用户）。 （2）提供动态和静态负载平衡，以适应不同的带宽连接。 （3）提供验证，过滤和转换数据的服务。 （4）提供一个监视和控制系统，该系统了解监视数据，维护技术性能指标并提供警报，以便在出现问题时迅速通知管理员。这些网络增强功能可提高数据吞吐量并改善监视服务，同时为将来的面向服务的体系结构（SOA）计划提供桥梁和基础。

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