Results 71 to 80 of about 11,603,365 (342)

Exploration of Multi-Mission Spaceborne GNSS-R Raw IF Data Sets: Processing, Data Products and Potential Applications

Remote Sensing, 2022
Earth reflected Global Navigation Satellite System (GNSS) signals can be received by dedicated orbital receivers for remote sensing and Earth observation (EO) purposes. Different spaceborne missions have been launched during the past years, most of which
Weiqiang Li, E. Cardellach, S. Ribó, S. Oliveras, A. Rius   +4 more
semanticscholar   +1 more source

Effective Efficiency Advantage Assessment of Information Filter for Conventional Kalman Filter in GNSS Scenarios

Sensors, 2019
The Global Navigation Satellite System (GNSS) is a widely used positioning technique. Computational efficiency is crucial to applications such as real-time GNSS positioning and GNSS network data processing.
Yanning Zheng, Siyou Wang, Shengli Wang
doaj   +1 more source

A Novel Low-Cost GNSS Solution for the Real-Time Deformation Monitoring of Cable Saddle Pushing: A Case Study of Guojiatuo Suspension Bridge

Remote Sensing, 2022
Extreme loadings, a hostile environment and dangerous operation lead to the unsafe state of bridges under construction, especially large-span bridges.
Lidu Zhao, Yihui Yang, Zhongfu Xiang, Shuangcheng Zhang, Xinrui Li, Xuqiao Wang, Xiaping Ma, Chuan Hu, Jianping Pan, Yin Zhou, Maolin Chen   +10 more
doaj   +1 more source

An anti-jamming system for GNSS timing applications

2018 European Frequency and Time Forum (EFTF), 2018
Radio-Frequency Interference (RFI) and jamming are increasing problems for timing applications based on Global Navigation Satellite Systems (GNSS). FENIX-lite is a real-time pre-correlation anti-jamming system designed to provide increased resilience against RFI/jamming in critical GNSS-enabled applications.
Querol Borràs, Jorge, Camps Carmona, Adriano José, Manfredini, E.G., Píriz, R.   +3 more
openaire   +3 more sources

GNSS Reflectometry-Based Ocean Altimetry: State of the Art and Future Trends

Remote Sensing
For the past 20 years, Global Navigation Satellite System reflectometry (GNSS-R) technology has successfully shown its potential for remote sensing of the Earth’s surface, including ocean and land surfaces.
Tianhe Xu, Nazi Wang, Yunqiao He, Yunwei Li, Xinyue Meng, Fan Gao, Ernesto Lopez-Baeza   +6 more
doaj   +1 more source

GNSS Interference Environment in Malaysia: A Case Study

Journal of Engineering Technology and Applied Physics, 2021
Global Navigation Satellite Systems or GNSS is a space technology that has become an essential element nowadays for positioning, navigation & timing (PNT) with wide range of applications in many civilian sectors as well as across military.
Ooi Wei Han, Shahrizal Ide Moslin, Wan Aminullah   +2 more
doaj   +1 more source

WHITE PAPER: Protecting GNSS Against Intentional Interference [PDF]

arXiv, 2022
The vulnerabilities associated with modern systems relying on Global Navigation Satellite Systems (GNSS) due to intentional and unintentional interference is an increasing threat. Since radio frequency interference (RFI) significantly degrades the performance of a GNSS receiver.
arxiv  

Using Pole–Pole Measurements to Calculate Arbitrary 4‐Point Configurations—An Approach to Make Electrical Resistivity Tomography More Flexible and Time‐Efficient

Archaeological Prospection, EarlyView.
ABSTRACT Electrical resistivity tomography (ERT) is nowadays widely used in archaeological prospection. This study deals with an approach to make ERT more time‐efficient and flexible. It is based on calculating arbitrary 4‐point configurations by superposition of multiple pole–pole measurements.
Simon Levin Fischer, Ercan Erkul, Michael Gräber, Wolfgang Rabbel   +3 more
wiley   +1 more source

Multi-Global Navigation Satellite System for Earth Observation: Recent Developments and New Progress

Remote Sensing
The Global Navigation Satellite System (GNSS) has made important progress in Earth observation and applications. With the successful design of the BeiDou Navigation Satellite System (BDS), four global navigation satellite systems are available worldwide,
Shuanggen Jin, Xuyang Meng, Gino Dardanelli, Yunlong Zhu   +3 more
doaj   +1 more source

Precise VLBI/GNSS ties with micro-VLBI [PDF]

arXiv, 2023
We present here a concept of measuring local ties between collocated GNSS and VLBI stations using the microwave technique that effectively transforms a GNSS receiver to an element of a VLBI network. This is achieved by modifying the signal chain that allows to transfer voltage of the GNSS antenna to a digitizer via a coaxial cable.
arxiv