Results 51 to 60 of about 6,471 (208)
Remote Sensing, 2019 High-rate multi-constellation global navigation satellite system (GNSS) precise point positioning (PPP) has been recognized as an efficient and reliable technique for large earthquake monitoring.
Kai Zheng +7 more
doaj +1 more source
Integrated Precise Orbit Determination of Multi-GNSS and Large LEO Constellations
Remote Sensing, 2019 Global navigation satellite system (GNSS) orbits are traditionally determined by observation data of ground stations, which usually need even global distribution to ensure adequate observation geometry strength.
Xingxing Li +8 more
doaj +1 more source
Multi-Antenna GNSS-Over-Fiber Architecture for Extensive Remote Multi-Baseline Network
IEEE Photonics Journal, 2020 GNSS carrier-phase-based double-difference positioning has been widely used in various precision positioning systems. This paper proposes a cost-effective scheme for an extensive multi-antenna remote multi-baseline network using a single GNSS-over-fiber ...
Puyu Liu +5 more
doaj +1 more source
Distributed Multi-GNSS Timing and Localization for Nanosatellites
ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2018 Recent advances in distribution and miniaturization among spacecraft and expansion of global navigation satellite systems (GNSS) motivate the Distributed Multi-GNSS Timing and Localization system. The DiGiTaL system is intended to provide nanosatellite swarms with unprecedented centimeter-level relative navigation accuracy in real time and nanosecond ...
Vincent Giralo, Simone D’Amico
openaire +3 more sources
Remote Sensing, 2018 Spaceborne GNSS-R (global navigation satellite system reflectometry) is an innovative and powerful bistatic radar remote sensing technique that uses specialized GNSS-R instruments on LEO (low Earth orbit) satellites to receive GNSS L-band signals ...
Fan Gao +6 more
doaj +1 more source
Research on the Prediction Method of 3D Surface Deformation in Filling Mining Based on InSAR‐IPIM
Energy Science &Engineering, EarlyView.Aiming at a series of defects existing in the monitoring of mining area by InSAR technology, this paper proposes an insar‐ipim model to predict the three‐dimensional surface deformation of filling mining. The parameters of the model are inversed by using the group optimization algorithm slime bacteria algorithm proposed in 2020, and the empirical ...
Meng Wang +8 more
wiley +1 more source
Multi-Epoch 3D-Mapping-Aided Positioning using Bayesian Filtering Techniques
Navigation, 2022 The performance of different filtering algorithms combined with 3D-mapping-aided (3DMA) techniques is investigated in this paper. Several single- and multi-epoch filtering algorithms were implemented and then tested on static pedestrian navigation data ...
Qiming Zhong, Paul D. Groves
doaj +1 more source
A New Online Service for the Validation of Multi-GNSS Orbits Using SLR
Remote Sensing, 2017 In the last decade, we have been witnessing a rapid development of the constellations of Global and Regional Navigation Satellite Systems (GNSS/RNSS). Besides the well-known GPS and GLONASS, newly developed systems such as Galileo, BeiDou, QZSS and NAVIC
Radosław Zajdel +2 more
doaj +1 more source
Remote Sensing, 2020 The loose combination (LC) and the tight combination (TC) are two different models in the combined processing of four global navigation satellite systems (GNSSs).
Chenlong Deng +6 more
doaj +1 more source
Vertical Protection Level Optimization and Availability Analysis for Advanced RAIM
Frontiers in Energy Research, 2022 With the introduction of global navigation satellite systems (GNSSs) in aviation, there has been increased dependency on GNSS position. Multi-constellation GNSS services and equipment will remain a solution for many aircraft positions in safety.
Ershen Wang +7 more
doaj +1 more source