نتایج جستجو برای: gnss

تعداد نتایج: 6198  

2016
CHILKURI SRAVAN KUMAR Chilkuri Sravan Kumar

Global Navigation Satellite Systems (GNSS) are applicable to deliver train locations in real time. This train localization function should comply with railway functional safety standards; thus, the GNSS performance needs to be evaluated in consistent with railway EN 50126 standard [Reliability, Availability, Maintainability, and Safety (RAMS)]. This paper demonstrates the performance of the GNS...

Journal: :CoRR 2015
Dustin Tran David M. Blei Edoardo M. Airoldi

2018
Riccardo Barzaghi Noemi Emanuela Cazzaniga Carlo Iapige De Gaetani Livio Pinto Vincenza Tornatore

Global Navigation Satellite Systems (GNSS) receivers are nowadays commonly used in monitoring applications, e.g., in estimating crustal and infrastructure displacements. This is basically due to the recent improvements in GNSS instruments and methodologies that allow high-precision positioning, 24 h availability and semiautomatic data processing. In this paper, GNSS-estimated displacements on a...

2015
Kai-Wei Chiang Cheng-An Lin Chung-yen Kuo

The integration of the Strapdown Inertial Navigation System and Global Navigation Satellite System (SINS/GNSS) has been implemented for land-based gravimetry and has been proven to perform well in estimating gravity. Based on the mGal-level gravimetry results, this research aims to construct and develop a land-based SINS/GNSS gravimetry device containing a navigation-grade Inertial Measurement ...

Journal: :Chemical communications 2011
Yongliang Li Jiajun Wang Xifei Li Dongsheng Geng Ruying Li Xueling Sun

Graphene nanosheets (GNSs) were synthesized and used as cathode active materials in a nonaqueous lithium-oxygen battery. The GNSs electrode delivered an extremely high discharge capacity in comparison to carbon powders, which is attributed to its unique morphology and structure.

Journal: :Remote Sensing 2017
Serni Ribó Juan Carlos Arco-Fernández Estel Cardellach Fran Fabra Weiqiang Li Oleguer Nogues-Correig Antonio Rius Manuel Martín-Neira

In this paper, we present the Software PARIS Interferometric Receiver (SPIR), a high-speed GNSS reflectometry recording receiver which has been designed and implemented with the primary goal of demonstrating the synoptic capabilities of the interferometric technique in GNSS Reflectrometry. Thanks to the use of large bandwidth GNSS signals, this technique is advantageous in comparison to the so-...

Journal: :Remote Sensing 2012
Alejandro Egido Marco Caparrini Giulio Ruffini Simonetta Paloscia Emanuele Santi Leila Guerriero Nazzareno Pierdicca Nicolas Floury

The use of Global Navigation Satellite Systems (GNSS) signals for remote sensing applications, generally referred to as GNSS-Reflectometry (GNSS-R), is gaining increasing interest among the scientific community as a remote sensing tool for land applications. This paper describes a long term experimental campaign in which an extensive dataset of GNSS-R polarimetric measurements was acquired over...

Journal: :Remote Sensing 2018
Zhounan Dong Shuanggen Jin

Three-dimensional water vapor can be reconstructed from Global Navigation Satellite System (GNSS) observations, which can study 3-D profile variations of atmospheric water vapor and climate. However, there is a large uncertainty of water vapor tomography from single GPS system observations due to limited satellites. The rapid development of multi-GNSS, including China’s Beidou Navigation Satell...

2009
Thomas Yan Samsung Lim Chris Rizos

In this paper, the performance of real-time GNSS data distribution over a public packet switching network (such as the Internet) is assessed. It is expected that the provision of a suitable data format will allow users to take full advantage of the real-time GNSS data distribution system. Types of GNSS data supported, message sizes, data rates, data precision levels, hardware/software support, ...

2013
Feng Qin Xingqun Zhan Gang Du

Ultra-tight integration was first proposed by Abbott in 2003 with the purpose of integrating a global navigation satellite system (GNSS) and an inertial navigation system (INS). This technology can improve the tracking performances of a receiver by reconfiguring the tracking loops in GNSS-challenged environments. In this paper, the models of all error sources known to date in the phase lock loo...

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