Relevant bibliographies by topics / QZSS

Academic literature on the topic 'QZSS'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 January 2023

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Journal articles on the topic "QZSS"

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Sekiguchi, N., M. Shikada, and T. Kanai. "ON THE EVALUATION OF GNSS COMPLEMENTARY BY USING QUASIZENITH SATELLITE OF JAPAN." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 3, 2016): 495–502. http://dx.doi.org/10.5194/isprsarchives-xli-b1-495-2016.

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The positional information has an important role in our lifestyle. People need to get positional information by GNSS. The satellite positioning must receive a signal from four or more satellites, however, most of Japanese country is covered with mountain and urban area has a lot of tall buildings. Then Japanese government launched QZS (Quasi Zenith Satellite) which is the first satellite of QZSS (Quasi Zenith Satellite System) in 2010. QZSS including QZS can improve positioning accuracy and reliability. QZS has 6 signals by using four kinds of frequency. These signals are the same frequency of GPS and GLONASS and so on. This paper was reported about the comparison of the positioning between GPS and QZSS.
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Sekiguchi, N., M. Shikada, and T. Kanai. "ON THE EVALUATION OF GNSS COMPLEMENTARY BY USING QUASIZENITH SATELLITE OF JAPAN." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 3, 2016): 495–502. http://dx.doi.org/10.5194/isprs-archives-xli-b1-495-2016.

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The positional information has an important role in our lifestyle. People need to get positional information by GNSS. The satellite positioning must receive a signal from four or more satellites, however, most of Japanese country is covered with mountain and urban area has a lot of tall buildings. Then Japanese government launched QZS (Quasi Zenith Satellite) which is the first satellite of QZSS (Quasi Zenith Satellite System) in 2010. QZSS including QZS can improve positioning accuracy and reliability. QZS has 6 signals by using four kinds of frequency. These signals are the same frequency of GPS and GLONASS and so on. This paper was reported about the comparison of the positioning between GPS and QZSS.
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Krasuski, Kamil. "CHARAKTERYSTYKA SYSTEMU WSPOMAGANIA POZYCJONOWANIA QZSS-ZENITH." Informatics Control Measurement in Economy and Environment Protection 6, no. 4 (December 18, 2016): 58–62. http://dx.doi.org/10.5604/01.3001.0009.5191.

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W artykule przedstawiono charakterystykę japońskiego systemu nawigacyjnego QZSS-Zenith do wspomagania pozycjonowania satelitarnego. Scharakteryzowano poszczególne segmenty systemu QZSS-Zenith oraz opisano również skalę czasu i układ odniesienia w systemie QZSS. W części badawczej artykułu przedstawiono rezultaty pozycjonowania satelitarnego z użyciem obserwacji GPS i QZSS.
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Kitamura, Mitsunori, Taro Suzuki, Yoshiharu Amano, and Takumi Hashizume. "Evaluation for Vehicle Positioning in Urban Environment Using QZSS Enhancement Function." Journal of Robotics and Mechatronics 24, no. 5 (October 20, 2012): 894–901. http://dx.doi.org/10.20965/jrm.2012.p0894.

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In this paper, we have evaluated the performance and availability enhancement of Quasi-Zenith Satellite System (QZSS) in urban environments. In urban environments, QZSS can be expected to be fairly effective because of the high elevation angle of satellite and enhancement functions. Therefore, we conducted performance and availability enhancement evaluation tests to verify thus. In performance enhancement evaluation test, in order to evaluate the improvement of GPS accuracy by L1 Submeter-class Augmentation with Integrity Function (L1-SAIF) broadcasted by QZSS satellite, we compared the positioning errors of only GPS positioning and L1-SAIF positioning in open sky environment. In availability enhancement evaluation test, we performed the static and kinematic observation test. In static observation test, in order to evaluate the improvement of GPS accuracy by availability enhancement, we observed GPS and QZSS statically in narrow-sky environment. And we compared the positioning errors of only GPS positioning and positioning using availability enhancement. In kinematic observation test, in order to evaluate the availability of QZSS based on the visibility of QZSS satellite in urban environment, we observed QZSS and SBAS from moving vehicle. And we compared the visibility of QZSS and SBAS satellites. From these evaluation tests, it was confirmed that the performance and availability enhancement of QZSS have high availability and effectiveness.
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Onanong, Narumol, Julongkorn Pattameak, Teerachet Mekpradab, Surachet Chinnapark, and Prasert Kenpankho. "QZSS L1 Bandwidth Frequency Filter Design for QZSS Receiver." ASEAN Journal of Science and Engineering 1, no. 1 (April 19, 2021): 27–32. http://dx.doi.org/10.17509/ajse.v1i1.33764.

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We present the design of bandpass filter on the frequency of the QZSS satellite, by providing bandwidth at the cut-off frequency equally to the bandwidth of the QZSS L1 with selecting the response characteristic on Butterworth maximally flat amplitude. Bandpass filter design using frequency of the QZSS L1 with bandwidth is 24MHz. The design procedure involves two steps, the first step is to find the required order of the filter, which we use 3rd order, and the second step is to find the scale factor that must be applied to the normalized parameter values. The Band-Pass Butterworth filler is a combination between low pass and high pass. For the Butterworth filter, the value of a resistor that has been used are 50Ω. Then go to find the capacitor and inductor and by using PSpice as the tools for the simulation. The results of the output of bandpass filter at -3dB was between 1563 and 1587MHz. And was bandwidth around 24MHz. The combination of the lowpass filter and high pass filter is to perform as the bandpass filter. Therefore, there are two combinations also in designing bandpass filter. The aim of this combination is to have an influence on the performance of bandpass filter. As a conclusion, this designed filter on the frequency of QZSS L1 is to be useful by using bandpass filter.
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Pattameak, Julongkorn, Narumon Onanong, Teerachet Makpradab, Surachet Chinnapark, and Prasert Kenpankho. "QZSS L5 Bandwidth Frequency Filter Design for QZSS Receiver." ASEAN Journal of Science and Engineering 2, no. 1 (June 23, 2021): 95–100. http://dx.doi.org/10.17509/ajse.v2i1.37778.

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The purpose of this study was to design QZSS L5 Bandwidth Frequency Filter for QZSS Receiver. We presented the configuration of the Butterworth bandpass filter by using PSpice as the tool for the simulation. Bandpass filter frequency of the QZSS L5 with bandwidth is designed in 25 MHz using the Butterworth filter which is presented in this article. These designed circuits are composed of the 3rd order. Moreover, the combination between low pass filter and high pass filter is performed as a bandpass filter. In conclusion, this designed filter on the frequency of QZSS L5 is to be useful by using the Butterworth bandpass filter.
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Xie, Wei, Guanwen Huang, Bobin Cui, Pingli Li, Yu Cao, Haohao Wang, Zi Chen, and Bo Shao. "Characteristics and Performance Evaluation of QZSS Onboard Satellite Clocks." Sensors 19, no. 23 (November 24, 2019): 5147. http://dx.doi.org/10.3390/s19235147.

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In the Global Navigation Satellite System (GNSS) community, the Quasi-Zenith Satellite System (QZSS) is an augmentation system for users in the Asia-Pacific region. However, the characteristics and performance of four QZSS satellite clocks in a long-term scale are unknown at present. However, it is crucial to the positioning, navigation and timing (PNT) services of users, especially in Asia-Pacific region. In this study, the characteristics and performance variation of four QZSS satellite clocks, which including the phase, frequency, frequency drift, fitting residuals, frequency accuracy, periodic terms, frequency stability and short-term clock prediction, are revealed in detail for the first time based on the precise satellite clock offset products of nearly 1000 days. The important contributions are as follows: (1) It is detected that the times of phase and frequency jump are 2.25 and 1.5 for every QZSS satellite clock in one year. The magnitude of the frequency drift is about 10−18. The periodic oscillation of frequency drift of J01 and J02 satellite clocks is found. The clock offset model precision of QZSS is 0.33 ns. (2) The two main periods of QZSS satellite clock are 24 and 12 hours, which is the influence of the satellite orbit; (3) The frequency stability of 100, 1000 and 10,000 s are 1.98 × 10−13, 6.59 × 10−14 and 5.39 × 10−14 for QZSS satellite clock, respectively. The visible “bump” is found at about 400 s for J02 and J03 satellite clocks. The short-term clock prediction accuracy of is 0.12 ns. This study provides a reference for the state monitoring and performance variation of the QZSS satellite clock.
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Ye, Hongjun, Xiaojun Jing, Liang Liu, Maolei Wang, Shuo Hao, Xingkang Lang, and Baoguo Yu. "Analysis of Quasi-Zenith Satellite System Signal Acquisition and Multiplexing Characteristics in China Area." Sensors 20, no. 6 (March 11, 2020): 1547. http://dx.doi.org/10.3390/s20061547.

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On the basis of realizing regional navigation, the Quasi-Zenith Satellite System (QZSS) has advanced navigation function, which leads to the broadcasting of more signals in a single frequency of QZSS signals. Current signal transmission technology cannot solve this problem, so it is necessary to design a signal multiplexing method. The current QZSS satellite interface document does not disclose the multiplexing modulation method of the signal transmission, which has a certain impact on the acquisition of high-precision observation data and further data processing. The iGMAS (International GNSS Monitoring & Assessment System) Monitoring and Evaluation Center of the 54th Research Institute of China Electronics Technology Group Corporation has used the low-distortion data acquisition and processing platform and refined signal software receiving processing algorithm of the iGMAS to complete the signal acquisition and analysis of QZSS satellites. Analysis of the multiplexing and modulation method and signal characteristics for the QZSS has been carried out, which can provide a reference for the design and data processing of high-precision receivers.
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Lau, Lawrence, Hiroaki Tateshita, and Kazutoshi Sato. "Impact of Multi-GNSS on Positioning Accuracy and Multipath Errors in High-Precision Single-Epoch Solutions – A Case Study in Ningbo China." Journal of Navigation 68, no. 5 (March 31, 2015): 999–1017. http://dx.doi.org/10.1017/s0373463315000168.

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Real-Time Kinematic (RTK) Global Positioning System (GPS) carrier phase-based precise positioning has been widely using in geodesy and surveying applications, and other high accuracy positioning and navigation applications in the last two decades. More Global Navigation Satellite Systems (GNSS) are being developed and it is usually expected that combining GNSS will have a positive impact on positioning accuracy. This paper describes a case study carried out at Ningbo in China on the impact of multi-GNSS on RTK single epoch solutions. Both GPS and GLONASS are fully operational now. Moreover, the Quasi-Zenith Satellite System (QZSS) can be observed at Ningbo. Currently, only one QZSS satellite “MICHIBIKI” is operational. This paper carries out an early assessment of the impact of QZSS on GPS and GLONASS single-epoch high precision positioning (i.e., single-epoch positioning accuracy assessment) and investigates the multipath errors in the GPS, GLONASS and QZSS multi-frequency data.
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Huo, Xiang, Xue Wang, Sen Wang, Xiaofei Chen, Ganghua Zhou, and Xiaochun Lu. "Receiving and Assessing L1C Signal for In-Orbit GPS III and QZSS Transmissions Using a Software-Defined Receiver." Electronics 9, no. 1 (December 21, 2019): 11. http://dx.doi.org/10.3390/electronics9010011.

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To avoid signal interference in L1 frequency and provide various services, GPS has updated a modern signal, called L1C, which has been tested with three QZSS satellites launched in 2017. In December 2018, the first GPS III satellite was launched, which implies improved joint positioning using GPS and QZSS L1C signal. The L1C signal offers a series of advanced designs in signal modulation, message structure and coding. We present complete methodologies for joint L1C signal receiving and processing. For the transmitted signals, we present a methodology and results from collecting and assessing Binary Offset Carrier (BOC) modulation and time-multiplexed BOC (TMBOC) modulation used in the L1C signal. Using the same omnidirectional antenna and test equipment, we collected the L1C signal in Xi’an and Sanya, China, respectively. The experiments in Xi’an verify the joint positioning method to complement the GPS III and QZSS satellite constellations. Our methodology evaluates the ranging difference and positioning error of BOC and TMBOC modulation under the same environment and satellite constellation configuration in Sanya. It is also verified that the joint positioning error is less than the QZSS-only positioning due to the optimization of the satellite constellation.
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Dissertations / Theses on the topic "QZSS"

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Tappero, Fabrizio Surveying &amp Spatial Information Systems Faculty of Engineering UNSW. "Remote synchronization method for the quasi-zenith satellite system." Publisher:University of New South Wales. Surveying & Spatial Information Systems, 2008. http://handle.unsw.edu.au/1959.4/41467.

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This dissertation presents a novel satellite timekeeping system which does not require on-board atomic clocks as used by existing navigation satellite systems such as GPS, GLONASS or the planned GALILEO system. This concept is differentiated by the employment of a synchronization framework combined with lightweight steerable on-board clocks which act as transponders re-broadcasting the precise time remotely provided by the time synchronization network located on the ground. This allows the system to operate optimally when satellites are in direct contact with the ground station, making it suitable for a system like the Japanese Quasi-Zenith Satellite System, QZSS. Low satellite mass and low satellite manufacturing and launch cost are significant advantages of this novel system. Two possible implementations of the time synchronization network for QZSS are presented. Additionally, the problem of satellite communication interruption is analyzed and a solution is presented. Finally a positioning and timing quality analysis, aimed to provide understanding of the actual timing quality requirements for QZSS, is presented.
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Zhang, Huiben. "Architectures and signal processing methods for a single-frequency LEX receiver." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/99497/1/Huiben_Zhang_Thesis.pdf.

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This thesis makes a valuable contribution to the design of low-cost Global Navigation Satellite System receivers. The research builds a software defined radio that can acquire, track and decode the data messages from Japanese navigation satellites to improve the accuracy of GPS receivers from several meters down to several decimeters. This improvement can benefit automotive vehicle users, driverless vehicles and industry robots.
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Vikberg, Simon. "Utvärdering Thermisol QZS 20G : Ovako Induktionslinje." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75230.

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Ovakos induktionslinje i Hällefors består av induktionshärdning följt av induktionsanlöpning.  Släckningen vid härdningen sker med hjälp av duschar. Tidigare har Ovako använt sig av polymermedlet Aqua Tensid som släckningskoncentrat. I samband med användning av Aqua Tensid har kund upplevt förbättring i skärande bearbetning.  Användningen av Aqua Tensid har dock upphört p.g.a. arbetsmiljöproblem. Ovako har istället införskaffat Thermisol, ett annat polymermedel till släckningsprocessen. Detta arbete innehåller en utvärdering av Thermisol i Ovakos produktion då det tidigare inte gjorts. Test har utförts i induktionslinjen med släckning från rent vatten upp till en koncentrationshalt på 8,4% Thermisol. Testerna är utförda på stålsorten Ovako 356D. Från testerna har prov tagits ut och analyserats efter härdning samt efter anlöpning. Stängerna från testen har även följts upp i Ovakos svarvavdelning för att utvärdera om det uppstår skillnad i skärbarhet. De enbart härdade proverna visar på att prover släckta i Thermisol har större benägenhet till självanlöpning vid ytan. De resterande proverna visar inte på någon märkbar skillnad. Uppföljningen i svarv visar inte på någon skillnad i skärbarhet för stålsorten Ovako 356D.
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Al-Egli, Fares, and Moumin Hassan Mohamed. "Control, Design, and Implementation of Quasi Z-source Cascaded H-Bridge Inverter." Thesis, Linköpings universitet, Elektroniska Kretsar och System, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-152711.

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This report is about control, design and implementation of a low voltage-fed quasi Z-source three-level inverter. The topology has been interesting for photovoltaic-systems due to its ability to boost the incoming voltage without needing an extra switching control. The topology was first simulated in Simulink and later implemented on a full-bridge module to measure the harmonic distortion and estimating the power losses of the inverter. An appropriate control scheme was used to set up a shootthrough and design a three-level inverter. The conclusion for the report is that the quasi Z-source inverter could boost the DC-link voltage in the simulation. But there should be more consideration to the internal resistance of the components for the implementation stage as it gave out a lower output voltage than expected.
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I-PingSun and 孫逸平. "Investigation of GPS/QZSS L1/L5 Dual Frequency Signal Reception and its Application in Ionosphere Effect Assessment." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/43956993825993686019.

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碩士
國立成功大學
電機工程學系碩博士班
101
Over time, the modernized Global Navigation Satellite System (GNSS) with the improved signal structure arose and was realized at the last decade. In 2010, a Block IIF GPS satellite was launched and started to broadcast the signal on L5 band. The higher chipping rate and longer spreading code is used in this new satellite for the better accuracy. This thesis presents a dual frequency software procedure for post processing real data of the GPS L1 and new L5 signal. The detail algorithm from acquisition, tracking and combined positioning is realized. Due to the number of satellite that equip with new GPS signal are still insufficient, the positioning experiments are using L5 measurements to assist the L1 for better performance. Since the GPS/GNSS software receivers have been popular these years due to its flexibility and re-configurability while dealing with different types of signal. The implementation of the dual frequency receiver is by means of using two synchronized software radio platforms called Universal Software Radio Peripheral (USRP). The Japanese Quasi-Zenith Satellite System (QZSS) which broadcasted GPS signals on both L1 and L5 band is also considered in the experiment, including its SBAS-like signal L1-SAIF. Furthermore, owing to one of the main measurement error in GNSS is caused by Earth ionosphere, the estimation and elimination of this error can be an interesting issue. Thus, some discussions of ionosphere error estimation using GNSS measurement, QZSS L1-SAIF and IGS data are also present.
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Pina, Manuel António de. "Sistema Fotovoltaico Ligado à Rede Usando um Conversor Multinível Quasi-Z do Tipo T." Master's thesis, 2021. http://hdl.handle.net/10400.26/35682.

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Os inversores quasi-Z de três níveis (qZS) baseados na topologia tipo T são especialmente indicados para uso em sistemas fotovoltaicos conectados à rede. Na verdade, apresentam uma característica importante para este tipo de aplicação, pois apresentam a característica redutor/elevador. Além disso, também é caracterizado por alta confiabilidade e operação multinível. Porém, associados a este conversor, devem ser utilizados controladores que garantam seu melhor desempenho. Neste contexto, esta dissertação irá propor um sistema de controlo global para o inversor trifásico tipo T qZS em um sistema fotovoltaico conectado à rede. Assim, será considerado um algoritmo rastreador de máximo ponto de potência (MPPT) baseado em uma abordagem derivada de tempo integral robusta. Para as correntes de saída será utilizado um controlador de corrente desacoplado no qual será associado um modulador por largura de pulso sinusoidal (SPWM). O desempenho do sistema será verificado e testado por estudos de simulação. Os resultados mostrarão que este sistema fornecerá resultados bem-adaptados para esta aplicação.
Three-level quasi-Z-Source (qZS) inverters based on the T-Type topology are especially indicated to be used in grid-connected PV systems. In fact, they present an important feature for this type of application since presents Buck-Boost characteristic. Besides that, is also characterized by high reliability and multilevel operation. However, associated to this converter, it must be used controllers that will ensure their best performance. In this context, this thesis will propose a global control system for the three phase T-Type qZS inverter in a grid-connected PV System. So, it will be considered a MPPT algorithm based on a robust integral time derivative approach. For the output currents will be used a decoupled current controller in which will be associated to a SPWM modulator. The performance of the system will be verified and tested by simulation studies. The results will show that this system will provide results well adapted for this application.
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Book chapters on the topic "QZSS"

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Yan, Chao, Qing Wang, Fuyang Ke, Yuan Yang, and Fen Liu. "Code Multipath Analysis of QZSS by Time-Frequency Representation." In Communications in Computer and Information Science, 416–27. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6113-9_47.

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Hao, Maosen, Wenhai Jiao, Xiaolin Jia, and Qingrui Tao. "Precise Point Positioning Performance Evaluation of QZSS Centimeter Level Augmentation Service." In China Satellite Navigation Conference (CSNC) 2020 Proceedings: Volume III, 78–88. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3715-8_8.

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Sasakawa, Tadashi, and Takashi Ikeda. "Current Status of QZSS and Pilot Experiments in South East Asia." In Lecture Notes in Civil Engineering, 1191–96. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-2184-3_156.

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Nie, Xin, Fu Zheng, Yidong Lou, Jinjun Zheng, and Zuhong Li. "An Analysis of the QZSS Signal Based on the Data of IGS." In Lecture Notes in Electrical Engineering, 325–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46635-3_27.

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Odolinski, Robert, Peter J. G. Teunissen, and Dennis Odijk. "Combined GPS, BeiDou, Galileo, and QZSS Single-Epoch, Single-Frequency RTK Performance Analysis." In International Association of Geodesy Symposia, 643–49. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/1345_2015_123.

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Zhang, Yize, Nobuaki Kubo, Junping Chen, Hu Wang, and Jiexian Wang. "Assessment of the Contribution of QZSS Combined GPS/BeiDou Positioning in Asia-Pacific Areas." In Lecture Notes in Electrical Engineering, 467–78. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0005-9_37.

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Huo, Xiang, Xue Wang, Sen Wang, Xiaofei Chen, and Jing Ke. "Verification of GPS III and QZSS L1C Signal Joint Positioning Performance with Software-Defined Receiver." In Lecture Notes in Electrical Engineering, 307–16. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1773-0_24.

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Yadav, Arvind, and Subhash Chandra. "Trans-QZS Inverter for PV-Based Energy Conversion System." In Lecture Notes in Electrical Engineering, 89–98. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4975-3_7.

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Sundaram, A., and G. P. Ramesh. "Investigation of Solar Based SL-QZSI Fed Sensorless Control of BLDC Motor." In Intelligent Computing in Engineering, 779–87. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2780-7_84.

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Matiushkin, Oleksandr, Oleksandr Husev, Kostiantyn Tytelmaier, Kaspars Kroics, Oleksandr Veligorskyi, and Janis Zakis. "Comparative Analysis of qZS-Based Bidirectional DC-DC Converter for Storage Energy Application." In IFIP Advances in Information and Communication Technology, 409–18. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56077-9_40.

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Conference papers on the topic "QZSS"

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Kogure, Satoshi. "QZSS Update." In 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017). Institute of Navigation, 2017. http://dx.doi.org/10.33012/2017.15399.

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Sakai, Takeyasu, and Satoshi Kogure. "QZSS Update." In 31st International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2018). Institute of Navigation, 2018. http://dx.doi.org/10.33012/2018.15837.

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Kogure, Satoshi. "Update of QZSS." In 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021). Institute of Navigation, 2021. http://dx.doi.org/10.33012/2021.17897.

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Kogure, Satoshi. "Update of QZSS." In 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022). Institute of Navigation, 2022. http://dx.doi.org/10.33012/2022.18578.

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Kogure, Satoshi. "Latest Status of QZSS." In 33rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2020). Institute of Navigation, 2020. http://dx.doi.org/10.33012/2020.17556.

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Chino, Koichi, Dinesh Manandhar, and Ryosuke Shibasaki. "Authentication technology using QZSS." In 2014 IEEE/ION Position, Location and Navigation Symposium - PLANS 2014. IEEE, 2014. http://dx.doi.org/10.1109/plans.2014.6851394.

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Narita, Hideki, Jun Amagai, Masanori Aida, Yasuhiro Takahashi, Isao Nakazawa, Maho Nakamura, Hideki Ujihara, and Shin'ichi Hama. "Development of QZSS-mobile station." In 2012 European Frequency and Time Forum (EFTF). IEEE, 2012. http://dx.doi.org/10.1109/eftf.2012.6502401.

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Yamaguchi, Rintaro, Akihiro Komiyama, Koichi Yamada, Koichi Karasawa, Kazuki Ashida, Takahisa Karakama, and Tutomu Kaneko. "Flexible Planar Antenna for QZSS." In 2022 IEEE 11th Global Conference on Consumer Electronics (GCCE). IEEE, 2022. http://dx.doi.org/10.1109/gcce56475.2022.10014173.

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Leppakoski, Helena, Sakari Rautalin, Xiaolong Zhang, Simo Ali-Loytty, and Robert Piche. "Extended prediction of QZSS orbit and clock." In 2016 International Conference on Localization and GNSS (ICL-GNSS). IEEE, 2016. http://dx.doi.org/10.1109/icl-gnss.2016.7533689.

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Asari, Kori, Shigeru Matsuoka, and Hisao Amitani. "QZSS RTK-PPP Application to Autonomous Cars." In 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016). Institute of Navigation, 2016. http://dx.doi.org/10.33012/2016.14840.

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