Results 41 to 50 of about 128 (112)

Latest GNSS signal in space developments – GPS, QZSS & the new Beidou 3 under examination [PDF]

E3S Web of Conferences, 2019
Nowadays one can use four global navigation satellite systems (GNSS). Two of them are complete constellations (GPS, Glonass) and two (Beidou, Galileo) are already usable and will be finish in the near future.
Thoelert Steffen
doaj   +1 more source

ARA 290, a Peptide Derived from the Tertiary Structure of Erythropoietin, Produces Long-Term Relief of Neuropathic Pain Coupled with Suppression of the Spinal Microglia Response

Molecular Pain, 2014
Background: Neuropathic pain is a difficult to treat disorder arising from central or peripheral nervous system lesions. The etiology of neuropathic pain consists of several overlapping pathways converging into an exaggerated pain state with symptoms ...
Maarten Swartjes, Monique van Velzen, Marieke Niesters, Leon Aarts, Michael Brines, Ann Dunne, Anthony Cerami, Albert Dahan   +7 more
doaj   +1 more source

Characterizing and Modeling the BDS-3 Time Group Delay Error for ARAIM

Navigation
In the BDS-3 constellation, only the B3I signal is used to compute the broadcast clock offset. However, because advanced receiver autonomous integrity monitoring (ARAIM) uses dual-frequency measurements, the time group delay (TGD) must be considered in ...
Hengwei Zhang, Yiping Jiang, Zhipeng Wang   +2 more
doaj   +1 more source

Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring Performance

Sensors, 2018
Signal-In-Space User Range Errors (SIS UREs) are assumed to be overbounded by a normal distribution with a standard deviation represented by the User Range Accuracy (URA).
Zhipeng Wang, Wei Shao, Rui Li, Dan Song, Tinglin Li   +4 more
doaj   +1 more source

Multi‐constellation ARAIM exploiting satellite motion

NAVIGATION, 2020
In this work, a new time-sequential positioning and fault detection method is developed for dual-frequency, multi-constellation Advanced Receiver Autonomous Integrity Monitoring (ARAIM). Unlike conventional “snapshot” ARAIM, sequential ARAIM exploits changes in satellite geometry at the cost of slightly higher computation and memory loads.
Mathieu Joerger, Boris Pervan
openaire   +1 more source

Fast Exclusion Candidate Identification Based on Sparse Estimation for ARAIM Fault Exclusion Process

Remote Sensing
Advanced receiver autonomous integrity monitoring (ARAIM) is an integrity technique for a global navigation satellite system (GNSS), centered on the multiple hypothesis solution separation (MHSS) test, which assesses the consistency between a subset and ...
Hangtian Qi, Xiaowei Cui, Mingquan Lu
doaj   +1 more source

Cibinetide dampens innate immune cell functions thus ameliorating the course of experimental colitis

Scientific Reports, 2017
Two distinct forms of the erythropoietin receptor (EPOR) mediate the cellular responses to erythropoietin (EPO) in different tissues. EPOR homodimers signal to promote the maturation of erythroid progenitor cells.
Manfred Nairz, David Haschka, Stefanie Dichtl, Thomas Sonnweber, Andrea Schroll, Malte Aßhoff, John E. Mindur, Patrizia L. Moser, Dominik Wolf, Filip K. Swirski, Igor Theurl, Anthony Cerami, Michael Brines, Günter Weiss   +13 more
doaj   +1 more source

Impact of Temporal Correlation of Errors on GPS Receiver Autonomous Integrity Monitoring

IEEE Access
Receiver Autonomous Integrity Monitoring (RAIM) is widely adopted in commercial aircraft to support integrity monitoring for aircraft navigation safety in en-route and Non-Precision Approach (NPA) phases.
Junesol Song, Carl Milner, Christophe Macabiau   +2 more
doaj   +1 more source

ARAIM for Vertical Guidance Using GPS and BeiDou [PDF]

Journal of Global Positioning Systems, 2013
An advanced Receiver Autonomous Integrity Monitoring (ARAIM) approach is investigated when augmenting GPS satellites with the current regional BeiDou constellation. A procedure for integrity monitoring, including checking its availability, fault detection and exclusion, and integrity testing is presented.
openaire   +2 more sources

Analysis of BDS ARAIM Integrity Support Data Parameters

Navigation
The realization of the advanced receiver autonomous integrity monitoring (ARAIM) algorithm relies on integrity support data (ISD). To support the use of the BeiDou Navigation Satellite System (BDS) in ARAIM applications, the ISD parameters for BDS are ...
Changjiang Geng Chenghe Fang Zhigang Hu Xiaoli Song Lei Chen Zhipeng Wang, Yilun Cui   +1 more
doaj   +1 more source