Results 11 to 20 of about 739,624 (293)
H&ES Research, 2022 Introduction. The article is devoted to determining the minimum (threshold) SNRthr values at which GNSS receivers can operate in high-precision phase mode and in less accurate code mode. These minimum (threshold) values of SNRthr are determined primarily by the GNSS receivers' carrier synchronization systems (CCH – carrier synchronization systems) and ...
MARK I. ZHODZISHSKY +2 more
openaire +2 more sources
GNSS Receiver Antenna Absolute Field Calibration System Development: Testing and Preliminary Results
Remote Sensing, 2023 For high-precision Global Navigation Satellite Systems (GNSS) positioning based on carrier-phase measurements, knowledge of the GNSS receiver antenna electrical signal reception characteristics, i.e., phase center, is crucial.
Antonio Tupek +2 more
exaly +3 more sources
Advances in Space Research, 2021 Multi-frequency and multi-constellation GNSS have the potential to boost the overall performance of GNSS-based positioning, navigation and timing. This has an impact on the realisation of global reference frames, geophysical monitoring applications as ...
Johannes Kröger +2 more
exaly +2 more sources
Assessment of the Steering Precision of a Hydrographic Unmanned Surface Vessel (USV) along Sounding Profiles Using a Low-Cost Multi-Global Navigation Satellite System (GNSS) Receiver Supported Autopilot. [PDF]
Sensors (Basel), 2019 The performance of bathymetric measurements by traditional methods (using manned vessels) in ultra-shallow waters, i.e., lakes, rivers, and sea beaches with a depth of less than 1 m, is often difficult or, in many cases, impossible due to problems ...
Specht M +3 more
europepmc +2 more sources
A Software-Defined Spaceborne GNSS Receiver [PDF]
2018 9th ESA Workshop on Satellite NavigationTechnologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC), 2018 This paper reports the design, proof-of-concept implementation and preliminary performance assessment of a lowcost, software-defined spaceborne GNSS receiver. The presented approach takes advantage of the flexibility of software-defined radio technology and the forthcoming availability of radiationhardened, space-certified Systems-on-Module to ...
Fernandez Prades, Carles +5 more
openaire +4 more sources
Adaptive GNSS Receiver Design for Highly Dynamic Multipath Environments
IEEE Access, 2020 Ubiquitous navigation requires timely, uninterrupted and accurate estimate of receiver's position at all times, in all environments and for all modes of transportation and it is highly dependent on satellite availability, geometry and accurate ...
Arif Hussain +3 more
doaj +2 more sources
Real-Time Detection of Tsunami Ionospheric Disturbances with a Stand-Alone GNSS Receiver: A Preliminary Feasibility Demonstration. [PDF]
Sci Rep, 2017 It is well known that tsunamis can produce gravity waves that propagate up to the ionosphere generating disturbed electron densities in the E and F regions. These ionospheric disturbances can be studied in detail using ionospheric total electron content (
Savastano G +6 more
europepmc +2 more sources
Remote Sensing, 2023 The global navigation satellite system radio occultation (GNSS-RO) is an important means of space-based meteorological observation. It is necessary to test the Global Navigation Satellite System Occultation signal receiver on the ground before the ...
Wei Li +9 more
doaj +1 more source
Sensors, 2021 In the use of global navigation satellite systems (GNSS) to monitor ionosphere variations by estimating total electron content (TEC), differential code biases (DCBs) in GNSS measurements are a primary source of errors.
Ye Wang, Lin Zhao, Yang Gao
doaj +1 more source
Sensors, 2023 Global navigation satellite system (GNSS) technology is evolving at a rapid pace. The rapid advancement demands rapid prototyping tools to conduct research on new and innovative signals and systems.
Marc Majoral +2 more
doaj +1 more source