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Determination of the Risk of Location the Quay for Large Steel Components Handling in Vicinity of the Fairway Using the Fast-Time Simulation Method 航道附近大型钢构件装卸码头选址风险的快速仿真方法研究
Pub Date : 2018-12-01 DOI: 10.1515/aon-2018-0007
K. Marcjan, L. Gucma
Abstract The paper presents the use of the Fast-Time navigational simulator to verify the location of designed elements of navigational infrastructure in vicinity of a high traffic fairway. The aim of the study is to perform the analysis of navigational safety in vicinity of newly constructed quay placed to the east of the island Ostrow Brdowski. The Quay is intended handling of large steel structures. The Fast-Time simulation is performed to evaluate the safety of the navigation passage through the fairway along the quay for the future use of vessels which length may exceed 260 m. This kind of simulation method has been implemented to make a statistical analysis based on a large amount of data, the collection of which would be very expensive and time consuming using a Real-Time simulator.
摘要:本文介绍了利用Fast-Time导航模拟器在高流量航道附近验证导航基础设施设计要素的位置。本研究的目的是对osterrow Brdowski岛东部新建码头附近的航行安全进行分析。该码头用于处理大型钢结构。采用Fast-Time仿真方法,对未来长度可能超过260 m的船舶在码头航道上航行的安全性进行了评价。采用这种仿真方法是为了在大量数据的基础上进行统计分析,而使用实时仿真器收集这些数据是非常昂贵和耗时的。
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引用次数: 0
Removing the Influence of Network Effect on Local Position Solution 消除网络效应对局部位置解的影响
Pub Date : 2018-12-01 DOI: 10.1515/aon-2018-0011
J. Ćwiklak, S. Savchuk, S. Doskich
Abstract To investigate and remove the network effect to the national GNSS network the results obtained from three GNSS networks which are tied to ITRF2008 using minimal constraints were compared. The first network is the EUREF Permanent Network (EPN), the second is EPN subnetwork processed by WUT LAC (WUT), the third is exactly Ukraine reference network (URN). The position differences between these networks - EPN and URN (WUT and URN) can reach 9.1 (6.6) mm for X, 4 (3.8) mm for Y and 11.7 (12.2) mm for Z. To obtain consistent station positions and velocities without network effect two weekly solutions were combined. The results demonstrate that the network effect on the local solution (Ukraine reference network) can be eliminated. This approach is valid because the same data analysis strategy was applied during both network processing.
摘要为了研究和消除网络对国家GNSS网络的影响,比较了使用最小约束条件与ITRF2008绑定的三个GNSS网络获得的结果。第一个网络是EUREF永久网络(EPN),第二个是由WUT LAC(WUT)处理的EPN子网络,第三个正是乌克兰参考网络(URN)。这些网络之间的位置差-EPN和URN(WUT和URN)对于X可以达到9.1(6.6)mm,对于Y可以达到4(3.8)mm,并且对于Z可以达到11.7(12.2)mm。结果表明,可以消除网络对本地解决方案(乌克兰参考网络)的影响。这种方法是有效的,因为在两个网络处理过程中都应用了相同的数据分析策略。
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引用次数: 0
The Electromagnetic Field in the Vicinity of Radio-Navigation Systems 无线电导航系统附近的电磁场
Pub Date : 2018-12-01 DOI: 10.1515/aon-2018-0008
Natalia JÓŹWIK-MICHAŁOWSKA, Andrzej Felski
Abstract Today, electromagnetic waves are the basic medium for all communication tasks. This applies also to navigation, where the most commonly waves have lengths measured in centimetres (radar, GPS) and longer, such as the waves used in the AIS or DGPS technologies. Navigators are mostly interested in the communication functionality of the used systems, i.e. such factors as range of the system and signal-to-noise ratio. This leads directly to increasing the transmitters’ power. However, it is important to bear in mind that the electromagnetic field can endanger human health, therefore, establishing the level of radiation both on vessels and near the shore transmitters is crucial in this context. The experience of authors shows that the knowledge of the most of navigators hereupon is not large. From this result extremely irresponsible behaviors of one persons, as well as inexplicable phobias others. This article presents the subject using the example of the electromagnetic field present near a lighthouse emitting AIS and DGPS signals. Relevant measurements were made at the Rozewie lighthouse by certified laboratory of Maritime Institute in Gdansk according the polish standards and internal, certified procedures. Results of the measurements were related to the national and European standards for electromagnetic field measurements in the context of occupational health and safety.
摘要今天,电磁波是所有通信任务的基本介质。这也适用于导航,其中最常见的波的长度以厘米为单位(雷达、GPS)或更长,例如AIS或DGPS技术中使用的波。导航员最感兴趣的是所用系统的通信功能,即系统的范围和信噪比等因素。这直接导致变送器的功率增加。然而,重要的是要记住,电磁场可能危害人类健康,因此,在这种情况下,确定船只和近海发射机的辐射水平至关重要。作者的经验表明,这里大多数航海家的知识并不多。由此导致一个人极不负责任的行为,以及其他人莫名其妙的恐惧。本文以灯塔附近发射AIS和DGPS信号的电磁场为例介绍了这一主题。格但斯克海事研究所的认证实验室根据抛光标准和内部认证程序在Rozewie灯塔进行了相关测量。测量结果与职业健康和安全背景下电磁场测量的国家和欧洲标准有关。
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引用次数: 0
Detection of Small Bottom Objects From Multibeam Echosounder Data 基于多波束测深数据的海底小目标检测
Pub Date : 2018-12-01 DOI: 10.1515/aon-2018-0015
Dominik Iwen, M. Wąż
Abstract Multibeam Echo Sounder Systems (MBES) shallow water surveys provide capability not only acquiring bathymetric data useful for determining isobaths and mapping features on the seafloor which may be a hazard to navigation. They also allow detection of objects smaller or deeper than those required for the safety of seafaring and International Hydrography Organization (IHO) standards. In this article some of issues related to of efficient MBES shallow water surveys are stressed. Additionally a draft of post-processing techniques and result data format together with tools allowing extraction of bottom object from bathymetric data are presented.
摘要多波束回声测深系统(MBES)的浅水测量不仅能够获取对确定等深线有用的水深数据,还能在海底绘制可能对航行造成危害的特征。它们还可以探测比航海安全和国际海道测量组织(IHO)标准所要求的更小或更深的物体。本文着重讨论了有效进行MBES浅水测量的有关问题。此外,还提出了一种后处理技术草案和结果数据格式,以及从水深数据中提取底物的工具。
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引用次数: 0
Simulation and Analysis of Particle Filter Based Slam System 基于粒子滤波器的Slam系统仿真与分析
Pub Date : 2018-12-01 DOI: 10.1515/aon-2018-0010
P. Kaniewski, Pawel Slowak
Abstract The paper describes a problem and an algorithm for simultaneous localization and mapping (SLAM) for an unmanned aerial vehicle (UAV). The algorithm developed by the authors estimates the flight trajectory and builds a map of the terrain below the UAV. As a tool for estimating the UAV position and other parameters of flight, a particle filter was applied. The proposed algorithm was tested and analyzed by simulations and the paper presents a simulator developed by the authors and used for SLAM testing purposes. Chosen simulation results, including maps and UAV trajectories constructed by the SLAM algorithm are included in the paper.
摘要本文描述了一种用于无人机的同时定位和映射(SLAM)问题和算法。作者开发的算法估计了飞行轨迹,并绘制了无人机下方的地形图。作为估计无人机位置和其他飞行参数的工具,应用了粒子滤波器。通过仿真对所提出的算法进行了测试和分析,并介绍了作者开发的用于SLAM测试目的的模拟器。文中包括了选定的仿真结果,包括SLAM算法构建的地图和无人机轨迹。
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引用次数: 2
EDAS (EGNOS Data Access Service) Differential GNSS Corrections: A Reliable Free-of-Charge Alternative for Precision Farming in Europe EDAS (EGNOS数据访问服务)差分GNSS校正:欧洲精确农业的可靠免费替代方案
Pub Date : 2018-09-28 DOI: 10.1515/aon-2019-0005
J. Vázquez, E. Lacarra, J. Morán, M. A. Sánchez, A. González, J. Bruzual
Abstract EDAS (EGNOS Data Access Service) is the EGNOS internet broadcast service, which provides free of charge access to the data collected and generated by the EGNOS infrastructure. EDAS disseminates over the Internet, both in real time and via an FTP archive, the raw data of the GPS, GLONASS (no commitment on GLONASS data is provided (1)) and EGNOS GEO satellites collected by the receivers located at the EGNOS reference stations, which are mainly distributed over Europe and North Africa. The EDAS services offer several types of GNSS data in various protocols and formats, such as DGNSS corrections. This paper reports on the results of some in-field tests conducted by ESSP and Topcon Agriculture to confirm the suitability of EDAS DGNSS corrections for precision farming in Europe. The European Commission (EC) is the owner of EGNOS system (including EDAS) and has delegated the exploitation of EGNOS to the European GNSS Agency (GSA). EDAS service provision is performed by ESSP, as EGNOS Services Provider, under contract with the GSA, the EGNOS program manager. In the ENC 2018 article “EDAS (EGNOS Data Access Service): Differential GPS corrections performance test with state-of-the-art precision agriculture system”, ESSP and Topcon Agriculture presented the results of the first in-field test conducted in a dynamic and real-life environment in the summer of 2017. The test results indicated that the EDAS DGNSS corrections could enable a reliable pass-to-pass accuracy performance for a wide range of precision agriculture applications and become an attractive solution for cereal farms, when the farm is located in the vicinity of an EGNOS reference station. In particular, Topcon Agriculture acknowledged that the observed performance was sufficient to support the following precision agriculture applications: spraying and spreading of any crop type, tilling and harvesting of cereal. Then, ESSP and Topcon Agriculture engaged in additional testing activities to further characterise the EDAS DGPS performance in different scenarios (i.e. at various European locations and with a variety of distances between the designated farm and the target EGNOS reference station). In each test, multiple runs with the rover tractors have been performed over the reference patterns predefined in the Topcon guidance systems. Data recorded during the tests has been analysed in detail, looking at the key performance indicators (e.g. cross track error and pass-to-pass performance) that characterize the EDAS DGPS performance for precision agriculture applications. Different techniques for the computation of the pass-to-pass accuracy performance have been used, including a procedure to measure live in the field and a post-processing alternative. The diversity of scenarios available allows drawing conclusions on the applicability of EDAS DGPS corrections (in terms of maximum distance from the target EGNOS station) for precision agriculture and also understanding the impact of operati
EDAS (EGNOS数据访问服务)是EGNOS网络广播服务,提供免费访问EGNOS基础设施收集和生成的数据。EDAS在互联网上实时或通过FTP存档传播由位于EGNOS参考站的接收器收集的GPS、GLONASS(未提供GLONASS数据承诺(1))和EGNOS GEO卫星的原始数据,这些卫星主要分布在欧洲和北非。EDAS服务以各种协议和格式提供几种类型的GNSS数据,例如DGNSS校正。本文报告了由ESSP和Topcon Agriculture进行的一些田间试验的结果,以确认EDAS DGNSS校正在欧洲精确农业中的适用性。欧洲委员会(EC)是EGNOS系统(包括EDAS)的所有者,并已将EGNOS的开发授权给欧洲GNSS局(GSA)。EDAS服务由ESSP作为EGNOS服务提供商,根据与EGNOS项目经理GSA签订的合同提供。在ENC 2018的文章“EDAS (EGNOS数据访问服务):最先进的精准农业系统的差分GPS校正性能测试”中,ESSP和Topcon农业展示了2017年夏天在动态和现实环境中进行的首次现场测试的结果。测试结果表明,EDAS DGNSS校正可以为广泛的精准农业应用提供可靠的pass-to-pass精度性能,并成为谷物农场的一个有吸引力的解决方案,当农场位于EGNOS参考站附近时。Topcon Agriculture特别承认,观察到的表现足以支持以下精准农业应用:任何作物类型的喷洒和撒播,谷物的耕作和收获。然后,ESSP和Topcon Agriculture进行了额外的测试活动,以进一步表征EDAS DGPS在不同场景下的性能(即在欧洲不同地点,指定农场与目标EGNOS参考站之间的距离不同)。在每次测试中,探测车牵引车都在Topcon制导系统中预定义的参考模式上进行了多次运行。对测试期间记录的数据进行了详细分析,考察了EDAS DGPS在精准农业应用中表现出的关键性能指标(例如交叉轨迹误差和pass-to-pass性能)。使用了不同的技术来计算pass-to-pass精度性能,包括现场测量程序和后处理替代方案。现有方案的多样性可以得出关于EDAS DGPS校正(从目标EGNOS站的最大距离来看)对精准农业的适用性的结论,也可以了解操作相关方面的影响,例如移动互联网覆盖的质量(在欧洲各地变化很大)。本文介绍了电子教育服务系统及其体系结构、通过电子教育服务传播的主要数据类型以及电子教育服务用户可获得的在线信息。特别是,详细描述了EDAS Ntrip服务,因为它以RTCM格式向EGNOS参考站的GPS和GLONASS卫星提供差分校正,这是本研究的基础。文章还报告了使用Topcon接收器、车辆和自动转向系统进行的最新测试结果。在所有情况下,船上拖拉机上的两个不同的Topcon制导系统同时运行,以评估EDAS DGPS定位性能,并参照性能最高的基于rtk的Topcon解决方案提供的参考。本文的目的是根据测试活动的可用性能结果和相关精准农业专家的反馈,得出结论,将EDAS DGPS校正作为欧洲精准农业(特别是谷物农场)可靠的免费替代方案。
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引用次数: 3
Useful study 有用的研究
Pub Date : 2018-07-05 DOI: 10.5194/essd-2018-13-sc2
Anonymous
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引用次数: 4
Using Adaptive Motion Constraints to Support UWB/IMU Based Navigation 使用自适应运动约束支持基于UWB/IMU的导航
Pub Date : 2018-06-01 DOI: 10.1002/NAVI.227
Zoltán Koppányi, V. Navrátil, Haowei Xu, C. Toth, D. Grejner-Brzezinska
This study addresses the problem of short UWB (ultra-wide band) outages in a UWB/IMU (inertial measurement unit) integrated navigation system. UWB outages may occur due to non-line-of-sight between the UWB radios. To mitigate the errors during short UWB outages, we consider the special dynamics of the platform by adaptively applying constraints in the navigation filter. The application presented here is the navigation problem of the unexploded ordnances (UXOs) mapping platform. A UXO platform moves straight or performs turns or stops; these are the three dynamic states with pre-defined constraints. Two neural networks are examined to determine the current dynamic state based on IMU data. Tests on open-sky and canopied areas were carried out for the performance assessment. The networks were trained on the open-sky dataset, and then tested on the canopied area. The detected improvement of the proposed solution is 10–30% (10–15 cm) for 5–10 s long outages.
本研究解决了UWB/IMU(惯性测量单元)组合导航系统中的短UWB(超宽带)中断问题。UWB中断可能由于UWB无线电之间的非视线而发生。为了减轻短时间UWB中断期间的误差,我们通过在导航滤波器中自适应地应用约束来考虑平台的特殊动力学。这里介绍的应用程序是未爆炸秩序(UXOs)映射平台的导航问题。未爆弹药平台直线移动或转弯或停车;这是具有预定义约束的三种动态状态。对两个神经网络进行了检验,以基于IMU数据确定当前的动态状态。为了进行性能评估,在开阔的天空和有雨棚的区域进行了测试。这些网络在开放天空数据集上进行了训练,然后在树冠区域进行了测试。对于5–10 s的长时间停机,所提出的解决方案的检测改进为10–30%(10–15 cm)。
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引用次数: 8
A Proof of Concept Study for a Fast Acquisition in a LEO Satellite GPS Receiver 低轨道卫星GPS接收机快速捕获的概念验证研究
Pub Date : 2018-06-01 DOI: 10.1002/NAVI.224
Carlos Alcaide-Guillén, A. Vidal-Pantaleoni, José-Ramón Martín-Romero
The aim of this work is to perform a proof of concept study in order to assess if the pre-correlation differential detector can be used to tackle the GPS signal acquisition in a high dynamics scenario problem. The high dynamics scenario to be studied is the case in which a GPS receiver is used in a LEO (Low Earth Orbit) satellite mission. The receiver’s appropriateness for the case study is demonstrated via computational cost study and detector statistical characterization. GPS L1 C/A legacy signals for the context are simulated using a Spirent GSS7700 signal generator. The signals are sampled using a USRPX310 as an RF front-end. Using these samples, the receivers are implemented in Matlab using an SDR (Software Defined Radio) experimental setup. A specially designed figure of merit is used to measure the performance of the pre-correlation differential receiver in the realistic LEO satellite case study
这项工作的目的是进行概念验证研究,以评估是否可以使用预相关差分检测器来解决高动态场景下的GPS信号采集问题。要研究的高动态场景是在低地球轨道卫星任务中使用GPS接收器的情况。通过计算成本研究和检测器统计特征来证明接收器对案例研究的适当性。使用思博伦GSS7700信号发生器模拟GPS L1 C/A遗留信号。使用USRPX310作为射频前端对信号进行采样。利用这些样本,在Matlab中使用SDR(软件定义无线电)实验装置实现了接收机。在实际的低轨道卫星实例研究中,采用专门设计的优劣系数来衡量预相关差分接收机的性能
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引用次数: 0
Quantifying Observability and Analysis in Integrated Navigation 组合导航中的可观测性量化与分析
Pub Date : 2018-06-01 DOI: 10.1002/NAVI.225
Kai Shen, Yuanqing Xia, Meiling Wang, K. Neusypin, A. Proletarsky
{"title":"Quantifying Observability and Analysis in Integrated Navigation","authors":"Kai Shen, Yuanqing Xia, Meiling Wang, K. Neusypin, A. Proletarsky","doi":"10.1002/NAVI.225","DOIUrl":"https://doi.org/10.1002/NAVI.225","url":null,"abstract":"","PeriodicalId":30601,"journal":{"name":"Annual of Navigation","volume":"65 1","pages":"169-181"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/NAVI.225","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43735731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 29
期刊
Annual of Navigation
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