Results 11 to 20 of about 380,729 (285)

Collision-Avoidance Decision System for Inland Ships Based on Velocity Obstacle Algorithms

Journal of Marine Science and Engineering, 2022
Due to the complex hydrology and narrow channels of inland rivers, ship collision accidents occur frequently. The traditional collision-avoidance algorithms are often aimed at sea areas, and not often at inland rivers. To solve the problem of inland-ship
Guangyu Zhang, Yan Wang, Jian Liu, Wei Cai, Hongbo Wang   +4 more
doaj   +1 more source

Indoor and Outdoor Low-Cost Seamless Integrated Navigation System Based on the Integration of INS/GNSS/LIDAR System

Remote Sensing, 2020
Global Navigation Satellite System (GNSS) provides accurate positioning data for vehicular navigation in open outdoor environment. In an indoor environment, Light Detection and Ranging (LIDAR) Simultaneous Localization and Mapping (SLAM) establishes a ...
Ningbo Li, Lianwu Guan, Yanbin Gao, Shitong Du, Menghao Wu, Xingxing Guang, Xiaodan Cong   +6 more
doaj   +1 more source

Ship Security Relative Integrated Navigation with Injected Fault Measurement Attack and Unknown Statistical Property Noises

Journal of Marine Science and Engineering, 2020
In this work, the ship relative integrated navigation approaches are studied for the navigation scenarios with the measurements disturbed by unknown statistical property noises and with the injected fault measurement attacks.
Yongjing Wang, Yi Wang, Xiaoliang Feng
doaj   +1 more source

Interacting Multiple Model UAV Navigation Algorithm Based on a Robust Cubature Kalman Filter

IEEE Access, 2020
To improve the precision and robustness of Unmanned Aerial Vehicle (UAV) integrated navigation systems, this paper presents an Interacting Multiple Model (IMM) navigation algorithm based on a Robust Cubature Kalman Filter (RCKF) with modified Zero ...
Xuhang Liu, Xiaoxiong Liu, Weiguo Zhang, Yue Yang   +3 more
doaj   +1 more source

Investigation of the use of navigation tools in web-based learning: A data mining approach [PDF]

, 2008
Web-based learning is widespread in educational settings. The popularity of Web-based learning is in great measure because of its flexibility. Multiple navigation tools provided some of this flexibility.
Chen, SY, Liu, X, Minetou, CG
core   +1 more source

Photonic Image-free Mixer Based on a Dual-Parallel Mach-Zehnder Modulator and Fiber Dispersion for Radio-Over-Fiber System

IEEE Photonics Journal, 2019
In this paper, a simple image rejection mixer based on the dispersion effect in the single mode fiber is proposed and experimentally demonstrated for the radio-over-fiber (RoF) system.
Tao Lin, Zhike Zhang, Jinye Li, Shanghong Zhao, Jianguo Liu, Kun Zhang, Wei Jiang, He Li, Guodong Wang, Qiurong Zheng   +9 more
doaj   +1 more source

MU R-CNN: A Two-Dimensional Code Instance Segmentation Network Based on Deep Learning

Future Internet, 2019
In the context of Industry 4.0, the most popular way to identify and track objects is to add tags, and currently most companies still use cheap quick response (QR) tags, which can be positioned by computer vision (CV) technology.
Baoxi Yuan, Yang Li, Fan Jiang, Xiaojie Xu, Yingxia Guo, Jianhua Zhao, Deyue Zhang, Jianxin Guo, Xiaoli Shen   +8 more
doaj   +1 more source

Scalable Contact-Capacitive MEMS Switches With High Capacitance Ratio for Millimeter-Wave Applications

IEEE Access, 2022
This paper proposes a series of optimized scalable contact-capacitive radio frequency micro- electro-mechanical systems (RF MEMS) switches for millimeter wave applications.
Yulong Zhang, Huiliang Liu, Jianwen Sun, Zewen Liu   +3 more
doaj   +1 more source

Resource Virtualization and Allocation for TDD-F-OFDM Systems With MU-MIMO

IEEE Access, 2020
Wireless resource virtualization scheme has been proposed to satisfy the quality of service (QoS) requirement of multi-service traffic flows on multi-dimensional resources.
Baoguo Yu, Yachuan Bao, Kexin Cheng, Ruoxu Chen, Xiaofeng Lu   +4 more
doaj   +1 more source

Ant navigation: resetting the path integrator [PDF]

Journal of Experimental Biology, 2006
SUMMARY Desert ants use path integration as their predominant system of long-distance navigation, but they also make use of route-defining and nest-defining visual landmarks. Such landmark-gained information might override the information provided by the path integrator, but nevertheless the path integrator keeps running.
Knaden, M, Wehner, R
openaire   +4 more sources