COREGAL: Exploring Galileo E5 Reflected Signals for Biomass Applications

2016 ◽  
Author(s):  
Tiago Peres ◽  
Jo�o Silva ◽  
Carlos Ruivo ◽  
Pedro F. Silva ◽  
Jose M. Palomo ◽  
...  
Keyword(s):  
Galileo E5

scholarly journals Analysis of Galileo E5 and E5ab code tracking

GPS Solutions ◽  
2011 ◽  
Vol 16 (2) ◽  
pp. 243-258 ◽  
Author(s):  
Youssef Tawk ◽  
Cyril Botteron ◽  
Aleksandar Jovanovic ◽  
Pierre-André Farine
Keyword(s):  
Code Tracking ◽  
Galileo E5

Passive GNSS-based SAR imaging and opportunities using Galileo E5 signals

2015 ◽  
Vol 58 (6) ◽  
pp. 1-11 ◽  
Author(s):  
Hui Ma ◽  
Michail Antoniou ◽  
Mikhail Cherniakov
Keyword(s):  
Sar Imaging ◽  
Galileo E5

scholarly journals Analysis of the Impact of Multipath on Galileo System Measurements

2021 ◽  
Vol 13 (12) ◽  
pp. 2295
Author(s):  
Dominik Prochniewicz ◽  
Maciej Grzymala
Keyword(s):  
Satellite System ◽  
Navigation Systems ◽  
Short Baseline ◽  
Phase Measurements ◽  
Galileo E5 ◽  
Global Navigation Satellite ◽  
The Impact ◽  
Space Segment ◽  
Gps Observations

Multipath is one of the major source of errors in precise Global Navigation Satellite System positioning. With the emergence of new navigation systems, such as Galileo, upgraded signals are progressively being used and are expected to provide greater resistance to the effects of multipath compared to legacy Global Positioning System (GPS) signals. The high quality of Galileo observations along with recent development of the Galileo space segment can therefore offer significant advantages to Galileo users in terms of the accuracy and reliability of positioning. The aim of this paper is to verify this hypothesis. The multipath impact was determined both for code and phase measurements as well as for positioning results. The code multipath error was determined using the Code-Minus-Carrier combination. The influence of multipath on phase observations and positioning error was determined using measurements on a very short baseline. In addition, the multipath was classified into two different types: specular and diffuse, using wavelet transform. The results confirm that the Galileo code observations are more resistant to the multipath effect than GPS observations. Among all of the observations examined, the lowest values of code multipath errors were recorded for the Galileo E5 signal. However, no advantage of Galileo over GPS was observed for phase observations and for the analysis of positioning results.

Galileo E5 Signal Acquisition and Tracking Based on a Wide-Band Customized Universal Peripheral N210 Platform

2013 ◽  
Vol 765-767 ◽  
pp. 2686-2690
Author(s):  
Ning Yan Guo ◽  
Yan Zhao ◽  
Tian Xing Chu
Keyword(s):  
Radio Frequency ◽  
Wide Band ◽  
High Accuracy ◽  
Signal Acquisition ◽  
Multipath Mitigation ◽  
Front End ◽  
Rf Front End ◽  
Galileo E5

GNSS navigation has its own advantages which make researchers focus on how to effectively receive and process GNSS signals. This typically needs to utilize flexible specialized radio frequency front-ends, and we need to investigate novel software solutions. Due to the good performance of the Galileo E5 signal, the study of its acquisition, tracking and multipath mitigation has become increasingly significant. This paper has developed a customized 100MHz wide-band GNSS front-end. Three wide-band datasets of Galileo E5 signal were collected for case study. Final acquisition and tracking results of Galileo E5a signal successfully verified this customized RF front-end usability. It offers great potential for further studying the multi-constellation GNSS compatibility and interoperability to achieve high accuracy and continuity of GNSS navigation.

AltBOC Receiver Design and Tracking Performance Analyze

2012 ◽  
Vol 529 ◽  
pp. 9-13
Author(s):  
Wei Dong He ◽  
Xiao Chun Lu ◽  
Xiao Feng Chang ◽  
Cheng Yan He ◽  
Yong Nan Rao ◽  
...  
Keyword(s):  
Satellite System ◽  
Receiver Design ◽  
Code Tracking ◽  
Large Bandwidth ◽  
Altboc Signal ◽  
Galileo E5 ◽  
Global Navigation Satellite ◽  
Performance Analyze ◽  
Processing Techniques ◽  
Signal Processing Techniques

The Galileo E5 signal is by far the most sophisticated signal among all the signals used for Global Navigation satellite system. Galileo receivers capable of tracking E5 will benefit from much better performance in terms of measurement accuracy and multipath suppression. Compared with traditional receivers for BPSK or even BOC signals, E5(AltBOC) signal processing techniques requires much more challenging due to the stems of the extremely large bandwidth and inherently complex correlations. This paper aims to present the receiving methodology and the architecture of tracking. The architecture of the tracking channel is discussed alongside with related algorithms and impact of code tracking jitter is evaluated finally.

scholarly journals Galileo E5 AltBOC Signals: Application for Single-Frequency Total Electron Content Estimations

2021 ◽  
Vol 13 (19) ◽  
pp. 3973
Author(s):  
Artem M. Padokhin ◽  
Anna A. Mylnikova ◽  
Yury V. Yasyukevich ◽  
Yury V. Morozov ◽  
Gregory A. Kurbatov ◽  
...  
Keyword(s):  
Total Electron Content ◽  
Noise Level ◽  
Satellite System ◽  
Single Frequency ◽  
Electron Content ◽  
Dual Frequency ◽  
Binary Offset Carrier ◽  
Total Electron ◽  
Galileo E5 ◽  
Global Navigation Satellite

Global navigation satellite system signals are known to be an efficient tool to monitor the Earth ionosphere. We suggest Galileo E5 AltBOC phase and pseudorange observables— a single-frequency combination—to estimate the ionospheric total electron content (TEC). We performed a one-month campaign in September 2020 to compare the noise level for different TEC estimations based on single-frequency and dual-frequency data. Unlike GPS, GLONASS, or Galileo E5a and E5b single-frequency TEC estimations (involving signals with binary and quadrature phase-shift keying, such as BPSK and QPSK, or binary offset carrier (BOC) modulation), an extra wideband Galileo E5 AltBOC signal provided the smallest noise level, comparable to that of dual-frequency GPS. For elevation higher than 60 degrees, the 100-sec root-mean-square (RMS) of TEC, an estimated TEC noise proxy, was as follows for different signals: ~0.05 TECU for Galileo E5 AltBOC, 0.09 TECU for GPS L5, ~0.1TECU for Galileo E5a/E5b BPSK, and 0.85 TECU for Galileo E1 CBOC. Dual-frequency phase combinations provided RMS values of 0.03 TECU for Galileo E1/E5, 0.03 and 0.07 TECU for GPS L1/L2 and L1/L5. At low elevations, E5 AltBOC provided at least twice less single-frequency TEC noise as compared with data obtained from E5a or E5b. The short dataset of our study could limit the obtained estimates; however, we expect that the AltBOC single-frequency TEC will still surpass the BPSK analogue in noise parameters when the solar cycle evolves and geomagnetic activity increases. Therefore, AltBOC signals could advance geoscience.

scholarly journals Passive GNSS-Based SAR Resolution Improvement Using Joint Galileo E5 Signals

2015 ◽  
Vol 12 (8) ◽  
pp. 1640-1644 ◽  
Author(s):  
Hui Ma ◽  
Michail Antoniou ◽  
Mikhail Cherniakov
Keyword(s):  
Resolution Improvement ◽  
Galileo E5

On the potential of galileo E5 for time transfer

2013 ◽  
Vol 60 (1) ◽  
pp. 121-131 ◽  
Author(s):  
Mari Carmen Martinez-Belda ◽  
P. Defraigne ◽  
C. Bruyninx
Keyword(s):  
Time Transfer ◽  
Galileo E5

Galileo E5 Signal Acquisition using Intermediate Coherent Integration Time

2019 ◽  
Vol 72 (3) ◽  
pp. 555-574
Author(s):  
Jérôme Leclère ◽  
René Landry
Keyword(s):  
Partial Correlation ◽  
Correlation Method ◽  
Satellite System ◽  
Integration Time ◽  
Signal Acquisition ◽  
Coherent Integration ◽  
L5 Signal ◽  
Galileo E5 ◽  
Low Sensitivity ◽  
Global Navigation Satellite

The acquisition of modern Global Navigation Satellite System (GNSS) signals may be difficult due to the presence of a secondary code. Indeed, short coherent integration times should be used without non-coherent integration, which implies a low sensitivity; or long coherent integration times should be used, requiring synchronisation with the secondary code and thus a full correlation, which implies a significant computational burden, especially for signals with long secondary codes such as the Galileo E5 signal. A third option that lies between the previous two is to perform a partial correlation using less than one secondary code period as input, however this is less efficient in terms of complexity than using an entire secondary code period, and the code's autocorrelation properties are completely changed. The authors recently proposed a method based on combining secondary code correlations, allowing the use of intermediate coherent integration times with the possibility to do non-coherent integrations, and the method was successfully applied to the Global Positioning System (GPS) L5 signal. This paper studies the application of the method to the Galileo E5 signal, compares it with the partial correlation method, and discusses the case where less than one secondary code period is used as an input

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