Results 41 to 50 of about 11,564,246 (232)
High-precision Hardware Oscillators Ensemble for GNSS Attack Detection [PDF]
arXiv, 2022 A wide gamut of important applications rely on global navigation satellite systems (GNSS) for precise time and positioning. Attackers dictating the GNSS receiver position and time solution are a significant risk, especially due to the inherent vulnerability of GNSS systems.
arxiv
Impact and Implementation of Higher‐Order Ionospheric Effects on Precise GNSS Applications
, 2017 High precision Global Navigation Satellite Systems (GNSS) positioning and time transfer require correcting signal delays, in particular higher‐order ionospheric (I2+) terms.
T. Hadaś +17 more
semanticscholar +1 more source
Remote Sensing, 2022 With the availability of low-cost, mass-market dual-frequency GNSS (Global Navigation Satellite System) receivers, standalone processing methods such as Precise Point Positioning (PPP) are no longer restricted to geodetic-grade GNSS equipment only ...
Roland Hohensinn +7 more
semanticscholar +1 more source
Novel wide‐beam cross‐dipole CP antenna for GNSS applications
, 2018 A wide‐beam circularly polarized (CP) cross‐dipole antenna for GNSS applications is proposed in this article. This cross‐dipole antenna is fed by a coaxial cable, on which the slots is added to optimize the impedance matching.
Yun-Qi Zhang, S. Qin, Xi Li, Li-Xin Guo
semanticscholar +1 more source
Remote Sensing, 2022 Earth reflected Global Navigation Satellite System (GNSS) signals can be received by dedicated orbital receivers for remote sensing and Earth observation (EO) purposes. Different spaceborne missions have been launched during the past years, most of which
Weiqiang Li +4 more
semanticscholar +1 more source
A Wideband Circularly Polarized Antenna with Wide Beamwidth for GNSS Applications
, 2018 —A wideband circularly polarized antenna with wide half power beamwidth (HPBW) and 3 dB axial-ratio beamwidth (ARBW) is proposed in this paper. The circularly polarized (CP) radiation is realized by feeding two crossed printed dipoles through a wideband ...
C. Li +3 more
semanticscholar +1 more source
Italian National Conference on Sensors, 2017 The performance of Signal Quality Monitoring (SQM) techniques under different multipath scenarios is analyzed. First, SQM variation profiles are investigated as critical requirements in evaluating the theoretical performance of SQM metrics.
A. Pirsiavash +2 more
semanticscholar +1 more source
Advanced Materials Interfaces, EarlyView.This paper systematically introduces the characteristics and functions of 0D‐3D nanomaterials in super‐lubrication, analyzes the lubrication mechanism of these nanomaterials, and prospects the energy‐saving and environmental benefits brought by their progress in this field.
Kang Yang +7 more
wiley +1 more source
GNSS Reflectometry-Based Ocean Altimetry: State of the Art and Future Trends
Remote SensingFor the past 20 years, Global Navigation Satellite System reflectometry (GNSS-R) technology has successfully shown its potential for remote sensing of the Earth’s surface, including ocean and land surfaces.
Tianhe Xu +6 more
doaj +1 more source
Sensors, 2015 Global Navigation Satellite Systems (GNSS) broadcast signals for positioning and navigation, which can be also employed for remote sensing applications.
Micaela Troglia Gamba +5 more
doaj +1 more source