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GPS Precise Point Positioning with the Japanese Quasi-Zenith Satellite System LEX Augmentation Corrections

Suelynn Choy, Ken Harima, Yong Li, Mazher Choudhury, Chris Rizos, Yaka Wakabayashi, Satoshi Kogure
2015 Journal of navigation  
The LEX signal is unique for QZSS in delivering correction messages such as orbits and clock information that enable real-time Precise Point Positioning (PPP).  ...  The Japanese Quasi-Zenith Satellite System (QZSS) is a regional satellite navigation system capable of transmitting navigation signals that are compatible and interoperable with other Global Navigation  ...  The project 'High Accuracy Real-Time Positioning Utilising the Japanese Quasi Zenith Satellite System Augmentation System' is a collaborative project between the CRC-SI and Japan Aerospace Exploration  ... 
doi:10.1017/s0373463314000915 fatcat:ybpkt4yavvgcraosdbw5e52bd4

Improving availability and accuracy of GPS/BDS positioning using QZSS for single receiver

Zengke Li, Fu Chen
2016 Acta Geodaetica et Geophysica  
The Quasi-Zenith Satellite System (QZSS) service area covers East Asia and Oceania region and its platform is multi-constellation GNSS.  ...  Single point positioning mode, static precise point positioning mode and kinematic precise point positioning mode are used to assess the impact of QZSS on GPS/ BDS single receiver positioning.  ...  Acknowledgments The work is partially sponsored by the Fundamental Research Funds for the Central Universities (Grant Number: 2014ZDPY29) and partially sponsored by A Project Funded by the Priority Academic  ... 
doi:10.1007/s40328-016-0167-3 fatcat:t4h4hemo2jbfbhvml6243wzkyu

Partial Ambiguity Resolution Methods Applied by Precise Correction Information for Long Baseline Positioning

Masato Homan, Yukihiro Kubo, Sueo Sugimoto
2016 Proceedings of the ISCIE International Symposium on Stochastic Systems Theory and its Applications  
LEX correction information is a signal broadcast from QZS(Quasi-Zenith Satellite) which is Japanese navigation satellite.  ...  By using PAR and LEX correction, the experimental results show that the dominant error sources such as the ionospheric delay and satellite orbit error are corrected by LEX signal, and the integer ambiguity  ...  navigation system QZSS(Quasi-Zenith Satellite System) [2] .  ... 
doi:10.5687/sss.2016.307 fatcat:yyymlw26dnbgtgfigq24edvile

Utilization of Quasi-Zenith Satellite System for Navigation of a Robot Combine Harvester

Kannapat Udompant, Ricardo Ospina, Yong-Joo Kim, Noboru Noguchi
2021 Agronomy  
) Advanced Demonstration tool for Orbit and Clock Analysis (MADOCA) from the Quasi-Zenith Satellite System (QZSS) by using the Real Time Kinematic (RTK) positioning technique as a reference.  ...  The first section of this study evaluates the availability and the precision under static conditions by measuring the activation time, the reconnection time, and obtaining a Twice Distance Root Mean Square  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/agronomy11030483 doaj:b391ecacb5344fc6a62f00840238ae03 fatcat:er7276prnbfj3goewjo7l5ygj4

Evaluation of Positioning Performance using the GPS + QZSS in Shanghai

Yun ZHANG, Yongming LIU, Zhonghua HONG, Chunming FAN, Akio YASUDA
2014 Transactions of the Japan Society for Aeronautical and Space Sciences  
The Japanese Aerospace Exploration Agency (JAXA) confirmed that the first quasi-zenith satellite (QZS) "MICHIBIKI" began providing positioning signals on June 22, 2011 (JST).  ...  To demonstrate the positioning accuracy of the proposed methods, evaluations of the positioning performance using only the GPS system and the GPS þ QZSS system are conducted using real observation data  ...  Ltd., for his discussion on the OSQZSSrk receiver.  ... 
doi:10.2322/tjsass.57.1 fatcat:mc2jmmobnreoxnpillkah5eede

Australia-first high-precision positioning results with new Japanese QZSS regional satellite system

Safoora Zaminpardaz, Kan Wang, Peter J. G. Teunissen
2018 GPS Solutions  
The Japanese Quasi-Zenith Satellite System (QZSS) has recently (October 2017) reached its first 4-satellite constellation.  ...  In this contribution, the standalone performance of this 4-satellite QZSS constellation is assessed by means of its triplefrequency (L1 + L2 + L5) real-time kinematic (RTK) integer ambiguity resolution  ...  Introduction The Quasi-Zenith Satellite System (QZSS) is a Japanese satellite positioning system operated by Japan Aerospace Exploration Agency (JAXA).  ... 
doi:10.1007/s10291-018-0763-5 fatcat:tg4jo6jfizhdvltueliicap6n4

Impact of RNSSs on Positioning in the Asia-Oceania Region

Binghao Li, Shaocheng Zhang, Andrew G. Dempster, Chris Rizos
2011 Journal of Global Positioning Systems  
This paper introduces the Asian RNSSs, discuses single point positioning and differential positioning using RNSSs and analyses the combination of GPS and RNSS for urban canyon positioning by simulation  ...  Regional Navigation Satellite Systems (RNSS) are being developed by Asian countries. The Asia-Oceania region becomes a hotspot that the maximum number of navigation satellites can be "seen".  ...  Furthermore, more visible satellites will ensure that high accuracy carrier phasebased GNSS techniques, such as Real Time Kinematic (RTK) positioning, would be more available by help on reliable ambiguity  ... 
doi:10.5081/jgps.10.2.114 fatcat:coj5bwc4mjcvng56tlvwpiubyq

Multi-GNSS precise point positioning for precision agriculture

Jing Guo, Xingxing Li, Zhenhong Li, Leyin Hu, Guijun Yang, Chunjiang Zhao, David Fairbairn, David Watson, Maorong Ge
2018 Precision Agriculture  
In addition, compared to real time kinematic (RTK) GNSS, which is currently most commonly used for high precision PA applications, similar accuracy has  ...  The main objective of this research was to examine the feasibility of Multi-GNSS precise point positioning (PPP) in precision agriculture (PA) through a series of experiments with different working modes  ...  Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creat iveco mmons .org/licen ses/by/4.0/), which permits unrestricted use,  ... 
doi:10.1007/s11119-018-9563-8 fatcat:mhrklqrq7vgbjg3hcxjynke7j4

PWV Retrieval over the Ocean Using Shipborne GNSS Receivers with MADOCA Real-Time Orbits

Yoshinori Shoji, Kazutoshi Sato, Masanori Yabuki, Toshitaka Tsuda
2016 SOLA : Scientific Online Letters on the Atmosphere  
A kinematic precise point positioning strategy was used for the GNSS analysis with a real-time GNSS satellite ephemerides (orbit and clock information).  ...  We conducted observations using four shipborne global navigation satellite system (GNSS) receivers on three research vessels and one passenger ferry to assess the real-time practicality of measuring GNSS-derived  ...  Lines with points represent the frequency of each bin divided by the 0.1mm interval (left axis). Lines represent the accumulated frequency (right axis).  ... 
doi:10.2151/sola.2016-052 fatcat:ry3bhrdlrbhwpbxw57bprvxpqa

Principles of GNSS, inertial, and multisensor integrated navigation systems, 2nd edition [Book review]

Paul D. Groves
2015 IEEE Aerospace and Electronic Systems Magazine  
Kalman smoothing can also be used to provide a quasi-real-time solution by making use of information from a limited period after the time of interest.  ...  Section 6.5 provides a brief introduction to the regional navigation systems, Beidou, Compass, the Quasi-Zenith Satellite System (QZSS), and the Indian Regional Navigation System (IRNSS).  ...  Groves specializes in the integration and mathematical modeling of all types of navigation systems.  ... 
doi:10.1109/maes.2014.14110 fatcat:iwowfiidazbljiamuiyjv6363u

A Satellite Simulator and Model Based Operations in Quasi-Zenith Satellite System

Noriyasu Inaba, Hidemi Hase, Hiroyuki Miyamoto, Yoshiyuki Ishijima, Shiro Kawakita
2009 AIAA Modeling and Simulation Technologies Conference   unpublished
of the Quasi-Zenith Satellite System (QZSS) 4 , which is the Japanese satellite-based navigation system.  ...  An example of the application of this method is introduced in the development of the Quasi-Zenith Satellite System, which is a Japanese regional satellite based navigation system. 2 used for development  ...  QZSS Overview The Quasi-Zenith Satellite System (QZSS) broadcasts GPS-interoperable and augmentation signals as well as original Japanese signals from an inclined, elliptical geosynchronous orbit.  ... 
doi:10.2514/6.2009-5813 fatcat:7npav2emfbdt5jico7mc74qwdm

Theoretical and experimental investigation of the insertion loss of a dissipative muffler

Christian Pommer, Viggo Tarnow
1986 Journal of the Acoustical Society of America  
Points on rays having the same time coordinate define a timefront surface, thus designated to emphasize its high-frequency nature.  ...  A single degree of freedom (spring-mass-damper) system will be used as the focal point of this discussion.  ...  Of particular interest was the effect of modifying the tonal components of real equipment spectra in both amplitude and frequency using a digital signal processing system.  ... 
doi:10.1121/1.2024087 fatcat:tcee6inawvhubc6ftuk2ffhyce

Enhanced ambiguity resolution and integrity monitoring methods for Precise Point Positioning

Altti Jokinen, Washington Ochieng, Wolfgang Schuster, Shaojun Feng, Engineering And Physical Sciences Research Council
Currently, this level of GNSS positioning accuracy is most commonly achieved using the conventional Real Time Kinematic (cRTK) method.  ...  To address the limitations of cRTK, the Precise Point Positioning (PPP) method, which does not require local reference networks, was developed.  ...  Float Precise Point Positioning (PPP) The Precise Point Positioning (PPP) method can be used to obtain centimetre level positioning accuracy using only one GNSS receiver.  ... 
doi:10.25560/24806 fatcat:lv2vaqpopnc45cghapzwl3bjhm

Online estimation of inter-frequency/system phase biases in precise positioning [article]

Yumiao Tian, Technische Universität Berlin, Technische Universität Berlin, Frank Neitzel
The key to the real-time GNSS precise positioning is the instantaneous integer ambiguity resolution.  ...  Global Navigation Satellite Systems (GNSS) play an important role in precise positioning for geodesy and surveying engineering.  ...  Besides, two other regional navigation satellite systems are also under development, the Japanese Quasi-Zenith Satellite System (QZSS) and the Indian Regional Navigation Satellite System (IRNSS).  ... 
doi:10.14279/depositonce-5538 fatcat:edlhx2scdng43fkkzbyfjk6wpu

Lexikos 6

Lexikos Lexikos
2013 Lexikos  
gives greater precision and accuracy to the expression (Wright 1967: 44) .  ...  as part of the first 1 000 basic words for high school usage whereas four asterisks signal a word as belonging to the first 1 000 basic words for junior high school.  ...  In conclusion it needs pointing out that Doyle indicates her awareness of the point "that discrim,ination in society will not change simply by ridding our language of sexism" (2-3) and that using non-sexist  ... 
doi:10.5788/6-1-1019 fatcat:ggmzvnj5yfh7bhm6sfva7pnq5u
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