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u‑blox and Galileo – advancing accuracy over 20 years | GALILEO

u‑blox and Galileo – advancing accuracy over 20 years | GALILEO | geodesy | Scoop.it
News and stories about Galileo, the European Global Navigation Satellite System (GNSS). Website developed by Galileo engineers.
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STMicroelectronics’ Multi-Band GNSS Receiver Offers Autonomous-Driving Precision and Automotive Safety Compliance | Inside GNSS

STMicroelectronics’ Multi-Band GNSS Receiver Offers Autonomous-Driving Precision and Automotive Safety Compliance | Inside GNSS | geodesy | Scoop.it
Assisting safer autonomous driving, STMicroelectronics recently introduced the world's first multi-frequency satellite-navigation receiver chipset suitable for safety-critical automotive applications and high accuracy positioning at the decimeter and centimeter-level for precise point positioning (PPP) and real-time kinematic (RTK) applications.
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The Public Regulated Service (Galileo) Regulations 2018

These Regulations implement Decision No 1104/2011/EU of the European Parliament and of the Council of 25 October 2011 on the rules for access to the public regulated service provided by the global navigation satellite system established under the Galileo programme (“the PRS Decision”) (OJ L 287, 4.11.2011, p1). The public regulated service is restricted to government authorised users.
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Remote Sensing | Free Full-Text | Validation and Assessment of Multi-GNSS Real-Time Precise Point Positioning in Simulated Kinematic Mode Using IGS Real-Time Service

Remote Sensing | Free Full-Text | Validation and Assessment of Multi-GNSS Real-Time Precise Point Positioning in Simulated Kinematic Mode Using IGS Real-Time Service | geodesy | Scoop.it
Precise Point Positioning (PPP) is a popular technology for precise applications based on the Global Navigation Satellite System (GNSS). Multi-GNSS combined PPP has become a hot topic in recent years with the development of multiple GNSSs. Meanwhile, with the operation of the real-time service (RTS) of the International GNSS Service (IGS) agency that provides satellite orbit and clock corrections to broadcast ephemeris, it is possible to obtain the real-time precise products of satellite orbits and clocks and to conduct real-time PPP. In this contribution, the real-time multi-GNSS orbit and clock corrections of the CLK93 product are applied for real-time multi-GNSS PPP processing, and its orbit and clock qualities are investigated, first with a seven-day experiment by comparing them with the final multi-GNSS precise product ‘GBM’ from GFZ. Then, an experiment involving real-time PPP processing for three stations in the Multi-GNSS Experiment (MGEX) network with a testing period of two weeks is conducted in order to evaluate the convergence performance of real-time PPP in a simulated kinematic mode. The experimental result shows that real-time PPP can achieve a convergence performance of less than 15 min for an accuracy level of 20 cm. Finally, the real-time data streams from 12 globally distributed IGS/MGEX stations for one month are used to assess and validate the positioning accuracy of real-time multi-GNSS PPP. The results show that the simulated kinematic positioning accuracy achieved by real-time PPP on different stations is about 3.0 to 4.0 cm for the horizontal direction and 5.0 to 7.0 cm for the three-dimensional (3D) direction.
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Airbus-built PAZ radar satellite successfully launched | GeoConnexion

Airbus-built PAZ radar satellite successfully launched | GeoConnexion | geodesy | Scoop.it
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Multifilar antennas target improved autonomous performance

Multifilar antennas target improved autonomous performance | geodesy | Scoop.it
To attain the accuracy required for autonomous vehicle positioning within urban multipath propagation conditions, we need upgraded GNSS antenna performance.
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Provides First and Only Smartphone Platform in the Wi-Fi…

Provides First and Only Smartphone Platform in the Wi-Fi… | geodesy | Scoop.it
MediaTek today announced that its dual-SIM Android smartphone platform has been included in the Wi-Fi CERTIFIED PasspointTM test bed.
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Dubai and HERE with data infrastructure for driverless transportation | GeoConnexion

Dubai and HERE with data infrastructure for driverless transportation | GeoConnexion | geodesy | Scoop.it
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European Industry Gathers to Discuss Galileo's Post-2020 Future

European Industry Gathers to Discuss Galileo's Post-2020 Future | geodesy | Scoop.it
With Europe’s Galileo satellite navigation system is only one launch away from full global coverage,  representatives of Europea
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Correction: Garthwaite, M.C. on the Design of Radar Corner Reflectors for Deformation Monitoring in Multi-Frequency InSAR. Remote Sens. 2017, 9, 648

Correction: Garthwaite, M.C. on the Design of Radar Corner Reflectors for Deformation Monitoring in Multi-Frequency InSAR. Remote Sens. 2017, 9, 648 | geodesy | Scoop.it
After publication of the research paper [1], the author wishes to make the following correction to the paper.[...]
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Reference Frames For Applications In Geosciences PDF

Reference Frames For Applications In Geosciences PDF | geodesy | Scoop.it
Download the Book:Reference Frames For Applications In Geosciences PDF For Free, Preface: Reference systems and frames are of primary importance fo
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Low-cost GPS Sensors for Deformation Monitoring

Low-cost GPS Sensors for Deformation Monitoring | geodesy | Scoop.it
Deformation monitoring of glaciers is of great value to scientists with an interest in climate change. Due to the slow movements of glaciers,
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Tools and Applications | Natural Resources Canada

Tools and Applications | Natural Resources Canada | geodesy | Scoop.it
Natural Resources Canada's Canadian Geodetic Survey (CGS) provides several geodetic tools and their corresponding desktop applications, enabling accurate positioning, heights and coordinates transformations.
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What is a smart grid? by Hossam Afifi, Télécom SudParis

What is a smart grid? by Hossam Afifi, Télécom SudParis | geodesy | Scoop.it
The driving force behind the modernization of the electrical network, the smart grid is full of promise. Hossam Afifi, a researcher in networks at Télécom SudParis gives us a behind-the-scenes look at the smart grid.
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IJGI | Free Full-Text | Assessment of Multiple GNSS Real-Time SSR Products from Different Analysis Centers

IJGI | Free Full-Text | Assessment of Multiple GNSS Real-Time SSR Products from Different Analysis Centers | geodesy | Scoop.it
The real-time State Space Representation (SSR) product of the GNSS (Global Navigation Satellite System) orbit and clock is one of the most essential corrections for real-time precise point positioning (PPP). In this work, the performance of current SSR products from eight analysis centers were assessed by comparing it with the final product and the accuracy of real-time PPP. Numerical results showed that (1) the accuracies of the GPS SSR product were better than 8 cm for the satellite orbit and 0.3 ns for the satellite clock; (2) the accuracies of the GLONASS (GLObalnaya NAvigatsionnaya Sputnikovaya Sistema) SSR product were better than 10 cm for orbit RMS (Root Mean Square) and 0.6 ns for clock STD (Standard Deviation); and (3) the accuracies of the BDS (BeiDou Navigation Satellite System) and Galileo SSR products from CLK93 were about 14.54 and 4.42 cm for the orbit RMS and 0.32 and 0.18 ns for the clock STD, respectively. The simulated kinematic PPP results obtained using the SSR products from CLK93 and CLK51 performed better than those using other SSR products; and the accuracy of PPP based on all products was better than 6 and 10 cm in the horizontal and vertical directions, respectively. The real-time kinematic PPP experiment carried out in Beijing, Tianjin, and Shijiazhuang, China indicated that the SSR product CLK93 from Centre National d’Etudes Spatiales (CNES) had a better performance than CAS01. Moreover, the PPP with GPS + BDS dual systems had a higher accuracy than those with only a GPS single system.
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Remote Sensing | Free Full-Text | Triple-Frequency Code-Phase Combination Determination: A Comparison with the Hatch-Melbourne-Wübbena Combination Using BDS Signals

Remote Sensing | Free Full-Text | Triple-Frequency Code-Phase Combination Determination: A Comparison with the Hatch-Melbourne-Wübbena Combination Using BDS Signals | geodesy | Scoop.it
Considering the influence of the ionosphere, troposphere, and other systematic errors on double-differenced ambiguity resolution (AR), we present an optimal triple-frequency code-phase combination determination method driven by both the model and the real data. The new method makes full use of triple-frequency code measurements (especially the low-noise of the code on the B3 signal) to minimize the total noise level and achieve the largest AR success rate (model-driven) under different ionosphere residual situations (data-driven), thus speeding up the AR by directly rounding. With the triple-frequency Beidou Navigation Satellite System (BDS) data collected at five stations from a continuously-operating reference station network in Guangdong Province of China, different testing scenarios are defined (a medium baseline, whose distance is between 20 km and 50 km; a medium-long baseline, whose distance is between 50 km and 100 km; and a long baseline, whose distance is larger than 100 km). The efficiency of the optimal code-phase combination on the AR success rate was compared with that of the geometry-free and ionosphere-free (GIF) combination and the Hatch-Melbourne-Wübbena (HMW) combination. Results show that the optimal combinations can always achieve better results than the HMW combination with B2 and B3 signals, especially when the satellite elevation angle is larger than 45°. For the wide-lane AR which aims to obtain decimeter-level kinematic positioning service, the standard deviation (STD) of ambiguity residuals for the suboptimal combination are only about 0.2 cycles, and the AR success rate by directly rounding can be up to 99%. Compared with the HMW combinations using B1 and B2 signals and using B1 and B3 signals, the suboptimal combination achieves the best results in all baselines, with an overall improvement of about 40% and 20%, respectively. Additionally, the STD difference between the optimal and the GIF code-phase combinations decreases as the baseline length increases. This indicates that the GIF combination is more suitable for long baselines. The proposed optimal code-phase combination determination method can be applied to other multi-frequency global navigation satellite systems, such as new-generation BDS, Galileo, and modernized GPS.
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u-blox F9 platform designed for high-precision mass market

u-blox F9 platform designed for high-precision mass market | geodesy | Scoop.it
u‑blox has rolled out the u-blox F9 technology platform, delivering high-precision positioning solutions for mass market industrial and automotive applications.
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GEOID-DETERMINAION

GEOID DETERMINAION Presented by: Presented to : Radhika Bhandari (05) Mr. Shangharsha Thapa Prabha Dhital (09) Department of Civil and Sudha Sapkota (26) Geoma…
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A partnership to integrate LiDAR and Photogrammetric technologies | GeoConnexion

A partnership to integrate LiDAR and Photogrammetric technologies | GeoConnexion | geodesy | Scoop.it
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SENSORDEVICES 2018 Call for Papers

SENSORDEVICES 2018 Call for Papers | geodesy | Scoop.it
SENSORDEVICES 2018: Call for Papers Most of the sensor-oriented research and industry initiatives are focusing on sensor networks, data security, exchange protocols, energy optimization, and features related to intermittent connections.
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Opening of PPP services | Geoflex - Accuracy, continuity and integrity on radionavigation satellites measurements

Dix-huit mois après la signature des accords exclusifs et mondiaux d’industrialisation et de commercialisation de la technologie PPP-CNES, GÉOFLEX ouvrira le 01/01/2018 un premier niveau de services opérationnels permettant de se positionner partout dans le monde avec un seul récepteur et une précision (2D-95%) pouvant atteindre les 4 cm avec 30 minutes de convergence pour le service PPP-IAR pour « Precise Point Positioning with Integer Ambiguities Resolution ».
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Positioning with Android: GNSS observables

Positioning with Android: GNSS observables | geodesy | Scoop.it
Achieving precision positioning with a standard mobile device, a correction stream using the mobile device's data connection and a high-accuracy positioning a
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