Results 81 to 90 of about 57,094 (309)

Assessing the Performance of GNSS Signal Acquisition: New Signals and GPS L1 C/A Code

, 2014
International audienceThe low power and spread spectrum nature of GNSS signals make their detection and acquisition a key, but challenging aspect of receiver processing designs.
Hein, Günter, Julien, Olivier, Bacard, Fayaz, Foucras, Myriam, Macabiau, Christophe, Ekambi, Bertrand   +5 more
core   +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

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

Search and Passage Are Decoupled for Migrating Trout Kelts at Multi‐Exit Dam

River Research and Applications, EarlyView.
ABSTRACT Longitudinal and lateral river connectivity have been drastically reduced over time, with hydropower development as a major driver of fragmentation. While fishways are widely implemented to support upstream migration, downstream passage remains a major challenge.
Halvor Kjærås, Jon Museth, Finn Økland, Karl Øystein Gjelland, Henrik Baktoft, Torbjørn Forseth   +5 more
wiley   +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

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

GNSS performance modelling for high interrity aircraft applications [PDF]

, 2012
Till recently, no significant attempts have been made of developing Aircraft Based Augmentation System (ABAS) architectures capable of generating integrity signals suitable for safety-critical GNSS applications and no commercial ABAS products are ...
Shao, Liang
core  

On the compatibility of single‐scan terrestrial LiDAR with digital photogrammetry and field inventory metrics of vegetation structure in forest and agroforestry landscapes

Remote Sensing in Ecology and Conservation, EarlyView.
The single‐scan approach to terrestrial laser scanning (TLS) and the self‐terrain‐normalized form of drone‐based digital aerial photogrammetry (DAP) offer practical options for rapid assessment of the vegetation structure in tropical landscapes.
Magnus Onyiriagwu, Nereoh Leley, Caleb W. T. Ngaba, Anthony Macharia, Henry Muchiri, Abdalla Kisiwa, Martin Ehbrecht, Delphine Clara Zemp   +7 more
wiley   +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

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