Results 111 to 120 of about 195,439 (333)

Quantitative Analysis to the Impacts of IMU Quality in GPS/INS Deep Integration

Micromachines, 2015
In the Global Positioning System (GPS)/Inertial Navigation System (INS) deep integration system, the pure negative effect of the INS aiding is mainly the INS navigation error that is independent with the motion dynamics, which determine whether the INS ...
Xiaoji Niu, Yalong Ban, Quan Zhang, Tisheng Zhang, Hongping Zhang, Jingnan Liu   +5 more
doaj   +1 more source

Prioritized Real‐Time UAV‐Based Vessel Detection for Efficient Maritime Search

Journal of Field Robotics, EarlyView.
ABSTRACT Real‐time vessel detection in maritime environments is crucial for diverse applications requiring speed and accuracy. Static camera views often introduce blind spots, compromising detection efficiency. This paper proposes a novel, real‐time UAV‐based system that uses a dynamic camera control strategy to address this limitation.
Lyes Saad Saoud, Zikai Jia, Siyuan Yang, Muhayy Ud Din, Lakmal Seneviratne, Shaoming He, Irfan Hussain   +6 more
wiley   +1 more source

Online Estimation of the Mounting Angle and the Lever Arm for a Low-Cost Embedded Integrated Navigation Module

Remote Sensing
Multi-source fusion constitutes a research focus in the navigation domain. This article focuses on the online estimation of the mounting angles between the body frame and vehicle frame within low-cost embedded vehicle navigation modules and the lever arm
Qinghai Wang, Peihui Yan, Jinguang Jiang, Dongpeng Xie, Yuying Li, Qiyuan Zheng, Hongbin Tan, Jiaji Wu   +7 more
doaj   +1 more source

Integrating GPS with GLONASS for high‐rate seismogeodesy

Geophysical Research Letters, 2017
High‐rate GPS is a precious seismogeodetic tool to capture coseismic displacements unambiguously and usually improved by sidereal filtering to mitigate multipath effects dominating the periods of tens of seconds to minutes. We further introduced GLONASS (
Jianghui Geng, Peng Jiang, Jingnan Liu
doaj   +1 more source

BDS Precise Point Positioning for Seismic Displacements Monitoring: Benefit from the High-Rate Satellite Clock Corrections

Sensors, 2016
In order to satisfy the requirement of high-rate high-precision applications, 1 Hz BeiDou Navigation Satellite System (BDS) satellite clock corrections are generated based on precise orbit products, and the quality of the generated clock products is ...
Tao Geng, Xing Su, Rongxin Fang, Xin Xie, Qile Zhao, Jingnan Liu   +5 more
doaj   +1 more source

Patterning graphene nanostripes in substrate-supported functionalized graphene: A promising route to integrated, robust, and superior transistors

, 2012
It is promising to apply quantum-mechanically confined graphene systems in field-effect transistors. High stability, superior performance, and large-scale integration are the main challenges facing the practical application of graphene transistors.
A. A. Tseng, A. K. Geim, A. K. Singh, A. K. Singh, A. V. Rozhkov, C. Riedl, C. Stampfer, C. Tao, D. C. Wei, E. Muñoz, F. Molitor, F. Schwierz, F. Withers, G. Xu Jr., H. Wang, J. A. Robinson, J. Bai, J. Cai, J. H. Lee, K. S. Novoselov, L. C. Campos, L. F. Huang, L. Jiao, M. A. Ribas, M. Liu, M. Sprinkle, M. Y. Han, P. Gallagher, P. Koskinen, P. Sessi, Q. Bao, Q. Bao, R. Yang, S. L. Wong, V. Singh, W. D. Sheng, W. Y. Kim, X. Li, X. Liang, X. Wang, X. Wang, Y. Lin, Z. Chen, Z. M. Ao   +43 more
core   +1 more source

Friction Shock Absorbers and Reverse Thrust for Fast Multirotor Landing on High‐Speed Vehicles

Journal of Field Robotics, EarlyView.
ABSTRACT Typical landing gears of small uninhabited aerial vehicles (UAV) limit their capability to land on vehicles moving at more than 20–50 km/h due to high drag forces, high pitch angles and potentially high relative horizontal velocities. To enable landing at higher speeds, a combination of lightweight friction shock absorbers and reverse thrust ...
Isaac Tunney, John Bass, Alexis Lussier Desbiens   +2 more
wiley   +1 more source

National BDS Augmentation Service System (NBASS) of China: Progress and Assessment

Remote Sensing, 2017
: In this contribution, the processing strategies of real-time BeiDou System (BDS) precise orbits, clocks, and ionospheric corrections in the National BDS Augmentation Service System (NBASS) are briefly introduced.
Chuang Shi, Fu Zheng, Yidong Lou, Shengfeng Gu, Weixing Zhang, Xiaolei Dai, Xianjie Li, Hailin Guo, Xiaopeng Gong   +8 more
doaj   +1 more source

Role, path, and vision of “5G + BDS/GNSS”

Satellite Navigation, 2020
Communication, positioning, navigation, and decision-making abilities have evolved into Positioning, Navigation, and Timing (PNT) intelligence during the long process of human migration and hence promoted human evolution.
Jingnan Liu, Kefu Gao, Wenfei Guo, Jingsong Cui, Chi Guo   +4 more
doaj   +1 more source

First results of a GNSS-R experiment from a stratospheric balloon over boreal forests [PDF]

, 2015
The empirical results of a global navigation satellite systems reflectometry (GNSS-R) experiment onboard the Balloon EXperiments for University Students (BEXUS) 17 stratospheric balloon performed north of Sweden over boreal forests show that the power of
Camps Carmona, Adriano José, Carreño Luengo, Hugo, Forte Veliz, Giuseppe Francesco, Querol Borràs, Jorge   +3 more
core   +2 more sources