Results 31 to 40 of about 16,286 (236)
Assessing IGS GPS/Galileo/BDS-2/BDS-3 phase bias products with PRIDE PPP-AR
Satellite Navigation, 2021 Ambiguity Resolution in Precise Point Positioning (PPP-AR) is important to achieving high-precision positioning in wide areas. The International GNSS (Global Navigation Satellite System) Service (IGS) and some other academic organizations have begun to ...
Jianghui Geng, Songfeng Yang, Jiang Guo
doaj +1 more source
Estimation and evaluation of COSMIC radio occultation excess phase using undifferenced measurements [PDF]
Atmospheric Measurement Techniques, 2017 In the GPS radio occultation technique, the atmospheric excess phase (AEP) can be used to derive the refractivity, which is an important quantity in numerical weather prediction.
P. Xia, S. Ye, K. Jiang, D. Chen
doaj +1 more source
Satellite Navigation, 2022 Precise Point Positioning (PPP) with Ambiguity Resolution (AR) is an important high-precision positioning technique that is gaining popularity in geodetic and geophysical applications. The implementation of PPP-AR requires precise products such as orbits,
Jianghui Geng +4 more
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Evaluation of Network RTK Positioning Performance Based on BDS-3 New Signal System
Remote Sensing, 2021 The BeiDou navigation satellite system (BDS-3) has been deployed and provides positioning, navigation, and timing (PNT) services for users all over the world.
Pengxu Wang +5 more
doaj +1 more source
GPS + BDS Network Real-Time Differential Positioning Using a Position Domain Estimation Method
Remote Sensing, 2019 The network real-time differential positioning technique is a good choice for meter and sub-meter level’s navigation. More attention has been paid to the Global Positioning System (GPS) and GPS + GLONASS (GLObal NAvigation Satellite System) network
Jianhui Cui +8 more
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Tropospheric Second-Order Horizontal Gradient Modeling for GNSS PPP
Remote Sensing, 2022 The asymmetric delay has a considerable impact on Global Navigation Satellite Systems (GNSS) Positioning, Navigation and Timing (PNT) applications. In GNSS analyses, the impacts of the asymmetric delay are commonly compensated by using the classical ...
Yaozong Zhou +5 more
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Geo-spatial Information ScienceCalifornia has suffered several severe drought-flood abrupt alternation (DFAA) events over the past ~20 years, affecting non-linear variations in GPS position time series.
Xin Ding +7 more
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Impacts of inter-satellite links on the ECOM model performance for BDS-3 MEO satellites
Satellite NavigationInter-satellite link (ISL) plays an essential role in current and future Global Navigation Satellite System (GNSS). In this study, we investigate the impact of ISL observations on precise orbit determination for BeiDou-3 Navigation Satellite System (BDS ...
Chao Yang +4 more
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GNSS. Romværs påvirkning på GNSS
, 2021 Global Navigation Satellite System (GNSS) blir mer og mer tatt i bruk i ulike samfunnssektorer i den hensikt å benytte seg av PNT (Position Navigation Time) informasjon. GNSS har som mange andre systemer feil og sårbarheter. Flertallet av feilene og sårbarhetene er bundet opp mot det svake satellitt signalet.
Lerø, Nils-Endre Anglevik +1 more
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Advanced Intelligent Systems, EarlyView.: In this work, Voxel‐SLAM (simultaneous localization and mapping) is introduced: a complete, accurate, and versatile LiDAR (light detection and ranging) ‐inertial SLAM system consisting of five modules: initialization, odometry, local mapping (LM), loop closure (LC), and global mapping (GM), all employing the same map representation, an adaptive voxel
Zheng Liu +9 more
wiley +1 more source