Results 111 to 120 of about 549,143 (317)
An Optimum Strategy for Producing Precise GPS Satellite Orbits using Double-Differenced Observations
Journal of Engineering, 2018 Both the double-differenced and zero-differenced GNSS positioning strategies have been widely used by the geodesists for different geodetic applications which are demanded for reliable and precise positions.
Oday Yaseen Mohamed Zeki Alhamadani
doaj +1 more source
A Tractable Metric for Evaluating Base Station Geometries in Cellular Network Localization [PDF]
arXiv, 2015 In this letter, we present a new metric for characterizing the geometric conditions encountered in cellular positioning based on the angular spread of the base stations (BSs). The metric is shown to be closely related to the geometric-dilution-of-precision (GDOP), yet has the benefit of being characterizable in terms of the network parameters for BS ...
arxiv
Evaluation of the PPP (Precise Point Positioning) solution with different programs and services
, 2021 In the first part of this project, we will see what is a PPP, how it works, and a comparison between them and other Positioning methods. First of all, we are going to see how many GNSS constellations are there, and how they work a constellation. We will see the type of working witch we can classify all the positioning methods, to end in the PPP method.
openaire +1 more source
Sensors, 2015 The continuity and reliability of precise GNSS positioning can be seriously limited by severe user observation environments. The Inertial Navigation System (INS) can overcome such drawbacks, but its performance is clearly restricted by INS sensor errors ...
Zhouzheng Gao +6 more
doaj +1 more source
ChemPhysChem, EarlyView.The metal‐organic framework HKUST‐1 grown in a step‐wise manner shows growth rates in clear disagreement with the usual layer‐by‐layer (LbL) model. A nearly exact 4‐times higher rate compared to the simple growth model is found and a modified model involving lattice reconstruction is proposed.
T. Koehler +3 more
wiley +1 more source
Conflict Resolution Quarterly, EarlyView.ABSTRACT This rapid scoping review examines the interplay between public administration and community resilience during the COVID‐19 pandemic, focusing on the type of research conducted, emerging themes in resilience studies, and key lessons learned. The findings show that research in the Global North has primarily examined resilience at the city level,
Daniela Gröschke
wiley +1 more source
ESC Heart Failure, EarlyView.Abstract Aims This study aimed to investigate potential biomarkers for predicting incident heart failure (HF) in patients with atrial fibrillation and flutter (AF and AFL), utilizing proteomic data from the UK Biobank Pharma Proteomics Project (UKB‐PPP).
Gaifeng Hu +8 more
wiley +1 more source
Galileo millimeter-level kinematic precise point positioning with ambiguity resolution
Earth, Planets and Space, 2019 On February 11, 2019, four additional Galileo satellites were put into service, approaching the completion of the European global navigation satellite system constellation.
Georgia Katsigianni +3 more
doaj +1 more source
A variant of Marstrand's theorem for projections of cartesian products [PDF]
arXiv, 2011 We prove the following variant of Marstrand's theorem about projections of cartesian products of sets: Consider the space $\Lambda_m=\set{(t,O), t\in\R, O\in SO(m)}$ with the natural measure and set $\Lambda=\Lambda_{m_1}\times\ppp\times\Lambda_{m_n}$.
arxiv
Exploring the Potential and Advancements of Circular RNA Therapeutics
Exploration, EarlyView.Given the remarkable advantages in terms of stability, sustained expression profile, safety, wide range of druggable targets, scalable and cost‐effective manufacturing capabilities, circRNA is currently undergoing intensive investigation for various therapeutic applications such as vaccines, protein replacement, genetic disease treatment, gene therapy,
Lei Wang +6 more
wiley +1 more source