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Initial Assessment of the LEO Based Navigation Signal Augmentation System from Luojia-1A Satellite

Lei Wang, Ruizhi Chen, Deren Li, Guo Zhang, Xin Shen, Baoguo Yu, Cailun Wu, Song Xie, Peng Zhang, Ming Li, Yuanjin Pan
2018 Sensors  
Wuhan University is dedicated to LEO-based navigation signal augmentation research and launched one scientific experimental satellite named Luojia-1A.  ...  A low Earth orbiter (LEO)-based navigation signal augmentation system is considered as a complementary of current global navigation satellite systems (GNSS), which can accelerate precise positioning convergence  ...  Acknowledgments: We gratefully thank Peng Fang from the University of California, San Diego for polishing the manuscript. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s18113919 fatcat:sga5rif2qrbtrmt2kccop5bjse

A Novel Power Inversion Antenna Array for the Beidou Navigation Satellite System

Yiheng Jin, Hao Zhang, Tingting Lu, Hua Yang, T. Aaron Gulliver
2019 IEEE Access  
To reduce this degradation, a PI antenna array composed of a right-hand circular polarized (RHCP) antenna and a spatially-spread electromagnetic vector sensor (SS-EMVS) subarray is proposed, which can  ...  Furthermore, the proposed PI array is effective for all Beidou satellite system public service signals.  ...  A power inversion array is an antenna array based on the power inversion (PI) algorithm [1] - [3] to minimize the array output power.  ... 
doi:10.1109/access.2019.2900162 fatcat:nujtae3fknfwxc3ap7gktpztrm

Likelihood-based GNSS positioning using LOS/NLOS predictions from 3D mapping and pseudoranges

Paul D. Groves, Mounir Adjrad
2017 GPS Solutions  
Likelihoods for an array of candidate positions are computed based on the difference between the measured and predicted pseudoranges.  ...  The 3DMA GNSS algorithms have also been implemented in real time on a Raspberry Pi 3 at a 1-Hz update rate.  ...  Acknowledgement This work is funded by the Engineering and Physical Sciences Research Council (EPSRC) Project EP/L018446/1, Intelligent Positioning in Cities using GNSS and Enhanced 3D Mapping.  ... 
doi:10.1007/s10291-017-0654-1 fatcat:53hioddp5ncenp4kygc773wqqm

The IEEE-SA Working Group on Spaceborne GNSS-R: Scene Study

Hugo Carreno-Luengo, Adriano Camps, Chris Ruf, Nicolas Floury, Manuel Martin-Neira, Tianlin Wang, Siri Jodha Khalsa, Maria Paola Clarizia, Jennifer Reynolds, Joel Johnson, Andrew O'Brien, Carmela Galdi (+13 others)
2021 IEEE Access  
BEIDOU BeiDou consists of 2 separate satellite constellations. The first BeiDou system, officially called the BeiDou Satellite Navigation Experimental System (BeiDou-1), consisted of 3 satellites.  ...  All of the above algorithms are based on cGNSS-R. The peak-derivate method has also been applied in 2013 to iGNSS-R [24] , and in 2014 to rGNSS-R [27] .  ... 
doi:10.1109/access.2021.3089762 fatcat:4dx5adyg2fe7dnxeet62zjlcdi

The FengYun-3C radio occultation sounder GNOS: a review of the mission and its early results and science applications

Yueqiang Sun, Weihua Bai, Congliang Liu, Yan Liu, Qifei Du, Xianyi Wang, Guanglin Yang, Mi Liao, Zhongdong Yang, Xiaoxin Zhang, Xiangguang Meng, Danyang Zhao (+3 others)
2018 Atmospheric Measurement Techniques  
</strong> The Global Navigation Satellite System (GNSS) Occultation Sounder (GNOS) is one of the new-generation payloads on board the Chinese FengYun 3 (FY-3) series of operational meteorological satellites  ...  FY-3C GNOS, on board the FY-3 series C satellite launched in September 2013, was designed to acquire setting and rising radio occultation (RO) data by using GNSS signals from both the Chinese BeiDou Navigation  ...  This research was supported by the National Natural Science Foundation of China (grant nos. 41775034, 41405039, 41405040, 41505030, and 41606206)  ... 
doi:10.5194/amt-11-5797-2018 fatcat:ttqvfeqb4zht7nnnzq7vkjjbiu

The FengYun-3C radio occultation sounder GNOS: a review of the mission and its early results and science applications

Yueqiang Sun, Weihua Bai, Congliang Liu, Yan Liu, Qifei Du, Xianyi Wang, Guanglin Yang, Mi Liao, Zhongdong Yang, Xiaoxin Zhang, Xiangguang Meng, Danyang Zhao (+3 others)
2018 Atmospheric Measurement Techniques Discussions  
The Global Navigation Satellite System (GNSS) occultation sounder (GNOS) is one of the new generation payloads onboard the Chinese FengYun 3 (FY-3) series of operational meteorological satellites for sounding  ...  The performance of the FY-3C GNOS product quality evaluation and scientific applications establishes confidence that the GNOS data from the series of FY-3 satellites will provide important contributions  ...  The EU of FY-3C GNOS is based on a field-programmable gate array (FPGA) and digital signal processor (DSP) framework.  ... 
doi:10.5194/amt-2017-385 fatcat:m5avq3r2qza6vcmu4xin55yxge

Why satellite localization beacons are not adapted for marine turtles' study: A sea wireless sensors network solution

Nour Mohammad Murad, Loic Guegan, Sylvain Bonhommeau
2017 2017 Global Information Infrastructure and Networking Symposium (GIIS)  
This article shows the effects of various parameters like modulation or the radio channel conditions on sea turtles trajectory estimated by terrestrial localization algorithms.  ...  This work is part of wireless sensors networks domain in the marine and terrestrial environment in the world of living beings.  ...  We test different localization algorithms [2] that involve best turtles position estimation and optimal gateways position on the coast or earth.  ... 
doi:10.1109/giis.2017.8169808 dblp:conf/giis/MuradGB17 fatcat:uwoy6azzfjhklnwm6njjxy46ny

A Survey on Non-Geostationary Satellite Systems: The Communication Perspective [article]

Hayder Al-Hraishawi, Houcine Chougrani, Steven Kisseleff, Eva Lagunas, Symeon Chatzinotas
2021 arXiv   pre-print
The promised improvements of NGSO systems have motivated this paper to provide a comprehensive survey of the state-of-the-art NGSO research focusing on the communication prospects, including physical layer  ...  Finally, we outline a set of innovative research directions and new opportunities for future NGSO research.  ...  Daz, “Introducing SOST: An security in new space: Analysis of threats, key enabling technologies ultra-low-cost star tracker concept based on a Raspberry Pi and open- and challenges  ... 
arXiv:2107.05312v2 fatcat:dqov3icnibfdrhzxfwkhsykfcq

A Comprehensive Overview of Technologies for Species and Habitat Monitoring and Conservation

José J Lahoz-Monfort, Michael J L Magrath
2021 BioScience  
We provide the first comprehensive overview of the current (2020) landscape of conservation technology, encompassing technologies for monitoring wildlife and habitats, as well as for on-the-ground conservation  ...  The last two sections cover actuators and computing (including web platforms, algorithms, and artificial intelligence).  ...  Acknowledgments We thank Craig Whiteford for comments and Michelle Cooper for early discussions, as well as Achaz von Hardenberg and two anonymous reviewers for constructive suggestions.  ... 
doi:10.1093/biosci/biab073 pmid:34616236 pmcid:PMC8490933 fatcat:2t57ecor35aerl35wf66hx2x7e

Spatiotemporal enabled Content-based Image Retrieval

Mariana Belgiu, Martin Sudmanns, Tiede Dirk, Andrea Baraldi, Stefan Lang
2016 International Conference on GIScience Short Paper Proceedings  
Few vector-based optimization algorithms are proposed in the literature, which are mostly based on 2D vector-based representation of the environment and do not adequately consider the presence of manmade  ...  One of the key issues of all deployment optimization algorithms is accurate estimation of the coverage of an individual sensor.  ...  analysis in the region of Taroudannt, Morocco.  ... 
doi:10.21433/b311729295dw fatcat:fulw4pw3kfh5nmfzcsy3pkisvm

Engineering, Technology & Applied Science Research (ETASR), Vol. 11, No. 2, pp. 6845-7068 [article]

2021 Zenodo  
of science application, technology, and engineering.  ...  Engineering, Technology & Applied Science Research (ETASR) is an international bimonthly wide scope, peer-reviewed open access journal for the publication of original articles concerned with diverse aspects  ...  The ground structure data and the strong-motion observation records at K-NET and KiK-net sites were provided by the National Research Institute for Earth Science and Disaster Resilience.  ... 
doi:10.5281/zenodo.4720665 fatcat:mk2prflstjaa3bhkjenwy22s6u

Quantitative Remote Sensing at Ultra-High Resolution with UAV Spectroscopy: A Review of Sensor Technology, Measurement Procedures, and Data Correction Workflows

Helge Aasen, Eija Honkavaara, Arko Lucieer, Pablo Zarco-Tejada
2018 Remote Sensing  
In this review, we evaluate the state-of-the-art methods in UAV spectral remote sensing and discuss sensor technology, measurement procedures, geometric processing, and radiometric calibration based on  ...  However, the diversification of sensing systems and user applications challenges the common application of good practice procedures that ensure the quality of the data.  ...  We also would like to thank Stefan Livens for the great visualizations of the different sensing principles in Table 1 and his helpful comments on the manuscript.  ... 
doi:10.3390/rs10071091 fatcat:hc3isqqapbdsne6jggaekvdj4m

Improved GNSS Carrier Phase Tracking for Hand Held Receivers [article]

Srinivas Bhaskar, University Of Calgary, University Of Calgary, Gérard Lachapelle, James Curran
A study of the effects of pedestrian dynamics on GNSS signal parameters, namely carrier frequency and phase, is conducted.  ...  A study of signal attenuation due to the presence of human body is also conducted and impact of such attenuation on the carrier phase tracking performance is empirically measured.  ...  correction generation + i f , pi f  , i p i f f   i f DRC Figure 5-2 Details of STFT-based feed-forward compensation algorithm The algorithm is schematically represented in Figure 5 -2 and explained  ... 
doi:10.11575/prism/26478 fatcat:mkucym3zxfdvxhhhweipbektze

IGS Technical Report 2014 [article]

Yoomin Jean, Rolf Dach
The International GNSS Service (IGS), a federation of government agencies, universities and research institutions, plays an increasingly critical role in support of GNSS-related research and engineering  ...  Applications of the Global Navigation Satellite Systems (GNSS) to Earth Sciences are numerous.  ...  The IGS Central Bureau is thanked for allowing use of its subscription.  ... 
doi:10.7892/boris.80306 fatcat:ux5yoo44dbawpopjmnz6k2y2fu

CCC 2020 Contents

2020 2020 39th Chinese Control Conference (CCC)   unpublished
CUI Wenjun, LI Yidong, DONG Hairong 5619 Analysis and Decision of Optimal Path of Forest Disaster Patrol Based on Beidou Navigation . . . . . . . . . . . . . . . . . . . . . . . . .  ...  ZHANG Jun 3293 Proceedings of the 39th Chinese Control Conference, July 27-29, 2020, Shenyang, China Selection Method of the Matching Area of Underwater Gravity-Aided Inertial Navigation Based on Vector  ... 
doi:10.23919/ccc50068.2020.9188973 fatcat:7t2dwrbc3zdcjnyijypuga7yhe
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