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2018 Integrated Communications, Navigation, Surveillance Conference (ICNS)最新文献

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Rapid assessment of air traffic impact of blocking airspaces: Integrated communications navigation and surveillance (ICNS) conference 空域阻塞对空中交通影响的快速评估:综合通信导航和监视会议
Pub Date : 2018-04-10 DOI: 10.1109/ICNSURV.2018.8384847
Amal Srivastava
▪ Research demonstrated viability of assessing the impact of blocking airspaces, using a “what-if” analysis paradigm ▪ Data reduction technique resulted in efficiency data size and memory management, with negligible loss in accuracy ▪ Traffic projection model performed well, given the uncertainties of traffic pattern ▪ Research results are preliminary, further study to evaluate sensitivity of model performance to constraints such as location, airspace size and closure time are ongoing ▪ Alternate approach to projection based on using a grid to capture traffic is being explored ▪ Assessing additional impact metrics, namely delay and extra distance is being researched.
·研究证明了使用“假设”分析范式评估封锁空域影响的可行性·数据缩减技术提高了效率,数据大小和内存管理,准确性损失可忽略不计·交通预测模型在交通模式不确定的情况下表现良好·研究结果是初步的,进一步研究以评估模型性能对位置等约束的敏感性;▪正在探索基于网格捕捉交通的替代投影方法▪正在研究评估额外的影响指标,即延迟和额外距离。
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引用次数: 0
Research on alternative positioning navigation and timing in Europe 欧洲替代定位导航与授时研究
Pub Date : 2018-04-10 DOI: 10.1109/ICNSURV.2018.8384887
V. Vitan, G. Berz, Luca Saini, J. Arethens, B. Belabbas, P. Hotmar
The development of multi-constellation, multi-frequency GNSS is ongoing, with the aim to enable a robust and reliable navigation and approach service to airspace users. While this will greatly reduce vulnerability to space weather, unintentional interference and constellation weakness, some residual vulnerabilities will remain. In the current, predominantly GPS L1 GNSS environment, aviation has accepted that alternate positioning, navigation and timing capabilities based on terrestrial systems remain necessary. These reversionary area navigation capabilities are based primarily on DME/DME, while still providing some residual VOR/DME services. However, this reversionary capability has not been demonstrated to support the stringent RNP requirements that GNSS can support. Also, DME is criticized as being spectrum inefficient, and aviation-internal and aviation-external pressures to share the DME band with other services are increasing significantly. A key question for the future evolution of Communication, Navigation and Surveillance systems is what type of a reversionary capability will be needed in the future (terrestrial or space based), and what performance levels it needs to provide. To answer this question, supported by specific technology options, a project under the SESAR Horizon 2020 Framework (PJ14-03-04) is working on this topic under the title “Alternative Positioning, Navigation and Timing, A-PNT”. A-PNT is a complex, multi-disciplinary topic, with technical and operational aspects going across the CNS domains, and spectrum concerns being an underlying driver. The research activities in PJ14-03-04 are covering a selected set of potential technical solutions: take full advantage of the actual DME performance, DME enhancements (ensuring compatibility with legacy systems), LDACS NAV function and eLORAN. This paper will focus the discussion on the performance levels achievable by each of these technologies and their major advantages and drawbacks. The concept of a modular approach will be introduced as well (which allows the computation of a position solution with integrity based on inputs from various types of sensors). The paper includes contributions from the following SESAR partners: EUROCONTROL, DLR, Thales Avionics, Thales Air Systems and Honeywell Aerospace.
多星座、多频率GNSS的发展正在进行中,目的是为空域用户提供强大可靠的导航和进近服务。虽然这将大大减少对空间天气、无意干扰和星座弱点的脆弱性,但仍将存在一些剩余脆弱性。在当前以GPS L1 GNSS为主的环境中,航空业已经接受了基于地面系统的替代定位、导航和授时能力仍然是必要的。这些回归区域导航功能主要基于DME/DME,同时还提供一些剩余的VOR/DME服务。然而,这种转换能力尚未被证明能够支持GNSS所能支持的严格的RNP要求。此外,DME被批评为频谱效率低,航空内部和航空外部与其他业务共享DME频段的压力显着增加。通信、导航和监视系统未来发展的一个关键问题是未来需要何种类型的转换能力(地面或天基),以及需要提供何种性能水平。为了回答这个问题,在具体技术方案的支持下,SESAR地平线2020框架(PJ14-03-04)下的一个项目正在研究这个主题,名为“替代定位、导航和授时,a - pnt”。a - pnt是一个复杂的、多学科的课题,技术和操作方面涉及整个CNS领域,频谱问题是一个潜在的驱动因素。PJ14-03-04中的研究活动涵盖了一系列潜在的技术解决方案:充分利用实际的DME性能、DME增强功能(确保与遗留系统的兼容性)、LDACS NAV功能和eLORAN。本文将重点讨论每种技术可实现的性能水平及其主要优点和缺点。模块化方法的概念也将被引入(它允许基于不同类型传感器输入的完整位置解决方案的计算)。该论文包括以下SESAR合作伙伴的贡献:EUROCONTROL, DLR,泰雷兹航空电子,泰雷兹航空系统和霍尼韦尔宇航。
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引用次数: 9
Assessing C2 communications for UAS traffic management 评估用于UAS交通管理的C2通信
Pub Date : 2018-04-10 DOI: 10.1109/ICNSURV.2018.8384844
R. Kerczewski, R. Apaza, A. Downey, John Wang, Konstantin J. Matheou
The National Aeronautics and Space Administration's (NASA) Unmanned Aircraft Systems (UAS) Traffic Management (UTM) project works to develop tools and technologies essential for safely enabling civilian low-altitude UAS operations. Currently there is no established infrastructure to enable and safely manage the widespread use of low-altitude airspace and UAS operations, regardless of the type of UAS. The UTM technical challenge will develop comprehensive and validated airspace operations and integration requirements to safely enable large-scale persistent access to visual line of sight and autonomous beyond visual line of sight small UAS in low-altitude airspace. Within the UTM project, a number of communications technologies to support UTM command and control (C2) are under investigation. In particular, commercial networked cellular systems are being tested and assessed for their ability to meet the reliability, scalability, cybersecurity and redundancy required. NASA Glenn Research Center is studying some of the aspects of employing such networks for UTM C2 communications. This includes the development of a test platform for sensing and characterizing the airborne C2 communications environment at various altitudes and in various terrains and topologies, measuring such aspects as received signal strength and interference. System performance aspects such as latency in the link, handover performance, packet error loss rate, drop outs, coverage gaps and other aspects impacting UTM operation will also be assessed. In this paper we explore some of the C2 approaches being proposed and demonstrated in the UTM project, the reliability, availability and other general C2 performance requirements, and approaches to evaluating and analyzing UTM C2 links based on commercial cellular networks.
美国国家航空航天局(NASA)的无人机系统(UAS)交通管理(UTM)项目致力于开发安全实现民用低空无人机操作所必需的工具和技术。目前,无论何种类型的无人机,都没有成熟的基础设施来实现和安全管理低空空域和无人机操作的广泛使用。UTM技术挑战将开发全面和经过验证的空域操作和集成要求,以安全地实现低空空域的大规模持久访问视距和自主超视距小型无人机。在UTM项目中,一些支持UTM指挥和控制(C2)的通信技术正在研究中。特别是,商用网络蜂窝系统正在测试和评估其满足可靠性、可扩展性、网络安全和冗余要求的能力。美国宇航局格伦研究中心正在研究将这种网络用于UTM C2通信的一些方面。这包括开发一个测试平台,用于在不同高度、不同地形和拓扑中感知和表征机载C2通信环境,测量接收信号强度和干扰等方面。系统性能方面,如链路延迟、切换性能、包丢包率、掉包、覆盖间隙和其他影响UTM操作的方面也将被评估。在本文中,我们探讨了在UTM项目中提出和演示的一些C2方法,可靠性,可用性和其他一般C2性能要求,以及基于商用蜂窝网络评估和分析UTM C2链路的方法。
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引用次数: 12
PRE-flight checks of navigation systems and PAPI lights using a UAV 使用无人机对导航系统和PAPI灯进行飞行前检查
Pub Date : 2018-04-10 DOI: 10.1109/ICNSURV.2018.8384839
Ebrahim Rahnama, Mostafa Asaadi, Kaveh Parto
One of the ATSEP1 activities which has considerable effect on safety is activities which should be done prior, during and after flight inspection and among these activities prior flight inspection has a considerable importance among them. ATSEP activities prior flight check due to technological and tools shortcoming include just ground test which does not completely fulfill the requirements of this because the maintenance activities and measurements confined to the signal in a limited height from ground. These shortcomings became significant in case of some naviads that the propagation beam formed in a considerably height above earth which glide path from ILS2 NAVAID is a good example and from visual aids navigation systems PAPI3 lights also have a same condition. In this paper doing prior flight inspection which called pre-flight checks proposed to be done by the use of an equipped UAV4 with required instruments to measure GP5-LLZ6 navigation systems and PAPI lights to ensure the accuracy of the data transmission of these NAVAIDs and performing the required adjustments if required for any change or displacement prior performing the Flight Inspection. This method has been examined for the first time on GP navigation system in SHOHADAYE ILAM Airport of IRAN, which the result was completely satisfactory and considerably reduced maintenance activities prior and during flight inspection and finally reduced flight inspection time due to equipment fine tuning.
ATSEP1中对安全有重要影响的活动之一是在飞行检查之前,期间和之后应该进行的活动在这些活动中,飞行检查之前的活动非常重要。由于技术和工具的缺陷,ATSEP活动在飞行检查之前包括地面测试,这并不能完全满足这一要求,因为维护活动和测量仅限于距离地面有限高度的信号。这些缺点在一些导航系统中变得非常明显,在距离地球相当高的地方形成传播光束,从ILS2 NAVAID滑翔路径就是一个很好的例子,从目视辅助导航系统PAPI3灯也有同样的情况。在本文中,进行飞行前检查,称为飞行前检查,建议使用配备有所需仪器的UAV4来测量GP5-LLZ6导航系统和PAPI灯,以确保这些NAVAIDs的数据传输的准确性,并在执行飞行检查之前,如果需要进行任何更改或位移,则进行所需的调整。该方法已在伊朗SHOHADAYE ILAM机场GP导航系统上进行了首次试验,结果完全令人满意,大大减少了飞行检查前和飞行检查期间的维护活动,最终由于设备微调减少了飞行检查时间。
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引用次数: 2
Frame structure of the C-band digital aeronautical communications system c波段数字航空通信系统的框架结构
Pub Date : 2018-04-10 DOI: 10.1109/ICNSURV.2018.8384841
D. Mielke
The growth of the market for unmanned aircraft (UA) is not expected to stop during the next years. The absence of a crew aboard of UAs requires both a certain level of autonomy of the vehicle and a reliable communication channel between the remote pilot and the aircraft. In our recent work, we proposed the C-Band Digital Aeronautical Communications System (CDACS) as a data link for this purpose. This paper describes the requirements to a command and control link for unmanned aircraft in terms of expected throughput among other criteria and proposes a simple cell and communication channel design based on these values. Furthermore, we provide concepts for the frame design of CDACS in both communication directions that will be evaluated during an upcoming measurement campaign.
无人驾驶飞机(UA)市场的增长预计在未来几年内不会停止。无人驾驶飞机上没有机组人员,需要飞行器具有一定程度的自主性,并在远程飞行员和飞机之间建立可靠的通信通道。在我们最近的工作中,我们提出了c波段数字航空通信系统(CDACS)作为这一目的的数据链路。本文从预期吞吐量和其他标准方面描述了对无人机指挥控制链路的要求,并提出了基于这些值的简单单元和通信信道设计。此外,我们提供了两个通信方向的CDACS框架设计的概念,这些概念将在即将到来的测量活动中进行评估。
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引用次数: 4
Automated detect and avoid: Autonomy and ethics 自动检测和避免:自主性和道德
Pub Date : 2018-04-10 DOI: 10.1109/ICNSURV.2018.8384834
E. Theunissen, Tessa Hope Veerman
In the aeronautical, automotive and nautical domain, automation of collision avoidance maneuvering is being addressed. In the automotive domain, the potential occurrence of so-called dilemma situations imposes yet unresolved challenges to the design of the automation. In the aeronautical domain, systems enabling (pilot-supervised) automated selection and execution of collision avoidance maneuvers have been certified. To prevent the need for a collision avoidance maneuver, aircraft have to remain Well Clear. For today's Detect and Avoid systems, the pilot has to choose and initiate the Well Clear maneuver. In this paper, a roadmap for a stepwise increase in automation of Detect and Avoid systems is discussed and the associated challenges are identified. It is argued that, similar to the automotive domain, beyond a certain level of automation, the ethical question under what conditions pilot judgment can be automated must be answered, and that this may well determine the upper limit to the level of automation that is acceptable.
在航空、汽车和航海领域,避碰机动的自动化正在得到解决。在汽车领域,所谓的两难情况的潜在发生给自动化设计带来了尚未解决的挑战。在航空领域,能够(飞行员监督下)自动选择和执行避碰机动的系统已经得到认证。为了避免碰撞避免机动的需要,飞机必须保持良好的清洁。对于今天的探测和避免系统,驾驶员必须选择并启动清井操作。本文讨论了逐步提高检测和避免系统自动化的路线图,并确定了相关的挑战。有人认为,类似于汽车领域,在一定程度的自动化之外,必须回答在什么条件下驾驶员判断可以自动化的伦理问题,这很可能决定可接受的自动化水平的上限。
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引用次数: 1
Phased array antenna for the mitigation of UAS interference 用于减缓无人机干扰的相控阵天线
Pub Date : 2018-04-10 DOI: 10.1109/ICNSURV.2018.8384843
J. Downey, Bryan L. Schoenholz, M. Piasecki, R. Kerczewski
The growing demand for Unmanned Aerial Systems (UAS) operating beyond the line of sight (BLOS) has resulted in an increased interest in using existing commercial satellite communication capabilities for UAS command and control (C2) communications. The World Radiocommunication Conference in 2015 designated portions of Ku-Band and Ka-Band fixed satellite service (FSS) spectrum to support UAS C2 communications, provided that potential interference with existing co-allocated users in these bands is addressed. As the user base in this new spectrum allocation expands, there is an increased potential for interference with existing terrestrial communication systems operating under fixed service (FS) allocations. The portion of Ka-Band spectrum allocated for UAS C2 avoids significant interference issues, but the Ku-Band allocation contains a co-primary F S allocation, creating potential interference problems. Therefore, UAS must identify solutions to avoid interfering with these existing FS ground sites while maintaining good links with satellite constellations. UAS operating with conventional fixed feed parabolic antennas will have difficulty in meeting interference thresholds, especially at high latitudes where the antennas will operate with low elevation angles. As a means of addressing this limitation, NASA is investigating the use of a phased array antenna to enable mitigation of interference into ground-based FS receivers. In this paper, a novel lightweight conformal phased array antenna will be presented that can use null-steering and/or beam shaping to avoid ground interference while simultaneously providing strong satellite microwave links for communications. The reduced weight of this design and ability to integrate into the fuselage of smaller UAS platforms will also be discussed as a potential solution to provide BLOS operation via spectrum sharing for an expanding user base. This paper will review design aspects of the conformal phased array antenna, describe the intended benefits in reducing interference with FS ground stations, and describe phased array development and test plans.
对超视距(BLOS)操作的无人机系统(UAS)的需求不断增长,导致对使用现有商业卫星通信能力进行UAS指挥和控制(C2)通信的兴趣增加。2015年世界无线电通信大会指定了ku波段和ka波段固定卫星业务(FSS)频谱的一部分,以支持UAS C2通信,前提是解决了这些频段中现有共分配用户的潜在干扰问题。随着新频谱分配的用户群扩大,对在固定业务分配下运行的现有地面通信系统的干扰可能性增加。分配给UAS C2的ka波段频谱部分避免了明显的干扰问题,但ku波段分配包含一个共同的主fs分配,产生了潜在的干扰问题。因此,无人机系统必须确定解决方案,以避免干扰这些现有的FS地面站点,同时保持与卫星星座的良好联系。使用传统固定馈电抛物面天线的无人机将难以满足干扰阈值,特别是在高纬度地区,天线将以低仰角运行。作为解决这一限制的一种手段,NASA正在研究使用相控阵天线来减轻对地面FS接收器的干扰。在本文中,将提出一种新型的轻型共形相控阵天线,它可以使用零指向和/或波束整形来避免地面干扰,同时为通信提供强大的卫星微波链路。这种设计的重量减轻以及集成到小型无人机平台机身的能力也将作为一种潜在的解决方案进行讨论,通过频谱共享为不断扩大的用户群提供BLOS操作。本文将回顾共形相控阵天线的设计方面,描述在减少对FS地面站的干扰方面的预期好处,并描述相控阵的开发和测试计划。
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引用次数: 3
Trustworthiness requirements and models for aviation and aerospace systems 航空和航天系统的可靠性要求和模型
Pub Date : 2018-04-10 DOI: 10.1109/ICNSURV.2018.8384831
A. Barón, R. Babiceanu, R. Seker
There has been a need to use effective dependability frameworks for designing and testing systems in safety-critical industries such as aviation and aerospace. These frameworks are modeled to meet the industry standards in order to ensure the required assurance levels are met. The current frameworks include reliability, safety, and availability through including the respective requirements. Cybersecurity has taken a foreground place in the safety-critical industry, however. Hence, security assessment cannot be ignored when considering a system dependability framework. There is an understanding that nowadays aircrafts are not purely physical, they contain both integrated hardware and software; which allows for attacks, threats, and unforeseeable software behavior that once were not conceived in the aircraft design. Additionally, the modern aircrafts operate as networked elements, forming a cloud, which we refer as the Internet of Wings (IoW). The framework wishing to address cybersecurity issues has to account for the changes in the environment in which the aircraft operates. This inclusion, in turn, results in increased complexity of the framework. The complexity of a design framework is exacerbated by the rapid changes that happen in the cybersecurity facet of an aircraft. The framework wishing to address cybersecurity issues has to account for the changes in the environment in which the aircraft operates. This inclusion, in turn, results in increased complexity of the framework. The complexity of a design framework is exacerbated by the rapid changes that happen in the cybersecurity facet of an aircraft. This work focuses on the development of a framework that includes cybersecurity and respective requirements to comply with the aircraft security constrains. Additionally, the framework includes trustworthiness solutions that allow for the cybersecurity requirements to complement the system dependability requirements. The result will be a system design that provides services that can be trusted. The suggested framework also takes into account that cybersecurity protection is updated continuously as a result of the ongoing discovery of new attacks and vulnerabilities that could affect the system. The framework aims to model cybersecurity and dependability requirements in aviation and aerospace systems to allow designing system services that can justifiably be trusted.
在航空航天等安全关键行业,有必要使用有效的可靠性框架来设计和测试系统。对这些框架进行建模以满足行业标准,以确保满足所需的保证级别。当前的框架通过包含各自的需求,包括可靠性、安全性和可用性。然而,网络安全在安全关键行业中占据了重要地位。因此,在考虑系统可靠性框架时,不能忽视安全评估。有一种理解是,现在的飞机不纯粹是物理的,它们包含集成的硬件和软件;它允许攻击、威胁和不可预见的软件行为,这些都是飞机设计中没有考虑到的。此外,现代飞机作为网络元素运行,形成了一个云,我们称之为机翼互联网(ow)。希望解决网络安全问题的框架必须考虑到飞机运行环境的变化。这种包含反过来又增加了框架的复杂性。飞机网络安全方面的快速变化加剧了设计框架的复杂性。希望解决网络安全问题的框架必须考虑到飞机运行环境的变化。这种包含反过来又增加了框架的复杂性。飞机网络安全方面的快速变化加剧了设计框架的复杂性。这项工作的重点是制定一个框架,其中包括网络安全和遵守飞机安全约束的相应要求。此外,该框架还包括可信赖性解决方案,允许网络安全需求补充系统可靠性需求。其结果将是提供可信任服务的系统设计。建议的框架还考虑到网络安全保护由于不断发现可能影响系统的新攻击和漏洞而不断更新。该框架旨在模拟航空和航天系统中的网络安全和可靠性需求,以允许设计可以合理信任的系统服务。
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引用次数: 4
Small unmanned aircraft electromagnetic interference (EMI) initial assessment 小型无人机电磁干扰(EMI)初步评估
Pub Date : 2018-04-10 DOI: 10.1109/ICNSURV.2018.8384835
Jaewoo Jung, C. Ippolito, Christopher Rogers, R. Kerczewski, A. Downey, Konstantin J. Matheou
As part of NASA's Unmanned Aircraft System Traffic Management Project, flight experiments are planned to characterize the radio frequency environment at altitudes up to 400 ft. to better understand how small unmanned aircraft system command and control links can be expected to perform in the low altitude environment. The flight experiments will use a radio frequency channel sensing payload attached to a small unmanned aircraft. In terms of the payload being capable of measuring relatively low-level signals at altitude, electromagnetic interference emanating from the vehicle itself could potentially complicate the measurement process. For this reason, NASA recognized the importance of identifying and measuring the electromagnetic interference performance of the unmanned aircraft planned for these flight experiments, a Dà-Jiãng Innovations Science and Technology Co., Ltd S1000+ Spreading Wing. This vehicle was measured in a controlled electromagnetic interference test chamber at the NASA Ames Research Center. The S1000 is a carbon fiber based platform with eight rotors. As such, the electromagnetic interference test results represent potential performance of a number of similar small unmanned aircraft types. Unmanned aircraft platforms significantly different from the S1000 may also require electromagnetic interference testing, and the method employed for NASA's S1000 electromagnetic interference tests can be applied to other platforms. In this paper, we describe the Unmanned Aircraft System Traffic Management project, the radio frequency channel sensing payload, the electromagnetic interference testing method and test results for the S1000, and discuss the implications of these results.
作为NASA无人机系统交通管理项目的一部分,飞行实验计划表征高达400英尺高度的无线电频率环境,以更好地了解小型无人机系统指挥和控制链路如何在低空环境中预期执行。飞行实验将使用一个无线射频通道传感载荷,连接到一个小型无人驾驶飞机上。就有效载荷而言,能够在高空测量相对较低的信号,从车辆本身发出的电磁干扰可能会使测量过程复杂化。因此,NASA认识到识别和测量为这些飞行实验计划的无人飞机电磁干扰性能的重要性,Dà-Jiãng创新科技有限公司S1000+扩展翼。这架飞行器是在美国宇航局艾姆斯研究中心的一个受控电磁干扰测试室内进行测量的。S1000是一个基于碳纤维的平台,有八个转子。因此,电磁干扰测试结果代表了许多类似小型无人机类型的潜在性能。与S1000有显著差异的无人机平台也可能需要进行电磁干扰测试,NASA S1000电磁干扰测试采用的方法可以应用于其他平台。本文介绍了S1000无人机系统交通管理项目、射频信道传感载荷、电磁干扰测试方法和测试结果,并讨论了这些结果的意义。
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引用次数: 5
Cyber security of unmanned aircraft system traffic management (UTM) 无人机系统交通管理(UTM)的网络安全
Pub Date : 2018-04-10 DOI: 10.1109/ICNSURV.2018.8384832
K. Sampigethaya, P. Kopardekar, Jerry Davis
Millions of small Unmanned Aircraft System (sUAS) aircraft of various shapes and capabilities will soon fly at low altitudes in urban environments for ambitious applications. It is critical to ensure these remotely piloted aircraft fly safely, predictably, and efficiently in this challenging airspace, without endangering themselves and other occupants sharing that airspace or in proximity. Concepts, technologies, processes, and policies to solve this hard problem of UAS Traffic Management (UTM) are being explored. But, cyber security considerations are largely missing. This paper bridges this gap and addresses UTM cyber security needs and issues. It contributes a comprehensive framework to understand, identify, classify, and assess security threats to UTM, including those resulting from sUAS vulnerabilities. Promising threat mitigations, major challenges, and research directions are discussed to secure UTM.
数以百万计的各种形状和功能的小型无人机系统(sUAS)飞机将很快在城市环境中低空飞行,以实现雄心勃勃的应用。确保这些遥控飞机在这一充满挑战的空域中安全、可预测、高效地飞行,而不会危及自己和共享该空域或附近的其他乘员,这一点至关重要。人们正在探索解决无人机系统流量管理(UTM)这一难题的概念、技术、流程和策略。但是,网络安全的考虑在很大程度上被忽略了。本文弥合了这一差距,并解决了UTM网络安全需求和问题。它提供了一个全面的框架来理解、识别、分类和评估UTM的安全威胁,包括由sUAS漏洞引起的威胁。讨论了有希望的威胁缓解、主要挑战和研究方向,以确保UTM的安全。
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引用次数: 7
期刊
2018 Integrated Communications, Navigation, Surveillance Conference (ICNS)
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