Enhancement of Augmentation Signal Availability by SBAS Implementation with the QZSS Constellation
T. Sakai, M. Kitamura, and T. Aso,
ION Pacific PNT,
Honolulu, HI, April 2019
PDF
2018
The IGSO SBAS: Signal Availability in the Polar Regions
T. Sakai, M. Kitamura, and T. Aso,
European Navigation Conference (ENC), Gotenburg, Sweden, May 2018
PPT
DFMC SBAS: Augmentation Service from the Zenith
T. Sakai,
Munich Satellite Navigation Summit,
Munich, Germany, March 2018
PPT
DFMC SBAS: Experiments and Potential Applications
T. Sakai,
International Committee on GNSS (ICG) APP-SG, Munich, Germany, March 2018
PPT
Development of DFMC SBAS Prototype System using L1 and L5 Band Signals of GPS, Galileo, and QZSS
M. Kitamura, T. Aso, T. Sakai, and K. Hoshinoo,
Proc. ION 2018 International Technical Meeting, pp.353-364
Reston, VA, Jan. 2018
Avoiding Improper Modeling in SBAS Ionospheric Correction with Shrunk Observations
T. Sakai, M. Kitamura, T. Aso, and K. Hoshinoo,
Proc. ION 2018 International Technical Meeting, pp.393-401,
Reston, VA, Jan. 2018
PPT
2017
The Status of Dual-Frequency Multi-Constellation SBAS Trial by Japan
T. Sakai,
International Symposium on GNSS, Hong Kong, China, Dec. 2017
PPT PDF
SBAS Ionospheric Correction with Minimalization of the Ionospheric Threat
T. Sakai, M. Kitamura, T. Aso, and K. Hoshinoo,
Proc. ION 2017 International Technical Meeting, pp.1049-1056,
Monterey, CA, Jan. 2017
PPT
2016
Japanese SBAS Program: Current Status and Dual-Frequency Trial
T. Sakai,
International Symposium on GNSS, Tainan, Taiwan, Dec. 2016
PPT PDF
Expanding the Coverage of Local Area Differential Correction
T. Sakai, T. Aso, M. Kitamura, K. Hoshinoo, and K. Ito,
Proc. ION 2016 International Technical Meeting, pp.624-630,
Monterey, CA, Jan. 2016
PPT
2015
Quality Control of Ionospheric Corrections
for Adoption of Wide Area Augmentation at the Low Latitude Regions
T. Sakai, T. Aso, K. Hoshinoo, and K. Ito,
Proc. ION 2015 International Technical Meeting,
Dana Point, CA, Jan. 2015
PPT
2014
East Asia - The Region with the Densest SBAS Augmentation
T. Sakai,
International Committee on GNSS (ICG) APP-SG, Jeju, South Korea, Oct. 2014
PPT
MSAS Status
T. Sakai,
International Symposium on GNSS 2014, Jeju, South Korea, Oct. 2014
PPT
SBAS Satellite Selection and Performance Monitoring at the Region
Where Multiple SBAS are Available
T. Sakai, K. Hoshinoo, and K. Ito,
Proc. ION GNSS+ 2014, Tampa, FL, Sept. 2014
PPT
2013
Dual Frequency SBAS Trial and Preliminary Results for East-Asia Region
T. Sakai and K. Hoshinoo,
Proc. ION GNSS+ 2013, Nashville, TN, Sept. 2013
PPT
2012
Expanding SBAS Service Area Toward the Southern Hemisphere
T. Sakai, K. Hoshinoo, and K. Ito,
Proc. ION GNSS 2012, Nashville, TN, Sept. 2012
GPS/GLONASS Multi-Constellation SBAS Trial and Preliminary Results
for East-Asia Region
T. Sakai, H. Yamada, and K. Hoshinoo,
Proc. ION GNSS 2012, Nashville, TN, Sept. 2012
PPT
2011
Validity of RAIM Prediction
T. Sakai,
Proc. ION 2011 International Technical Meeting, pp. 258-270,
San Diego, CA, Jan. 2011
PPT
2010
Computing SBAS Protection Levels with Consideration of All Active Messages
T. Sakai, K. Matsunaga, K. Hoshinoo, and T. Walter,
Proc. ION GNSS 2010, pp. 2042-2050, Portland, OR, Sept. 2010
PPT
2009
Modeling Vertical Structure of Ionosphere for SBAS
T. Sakai, T. Yoshihara, S. Saito, K. Matsunaga, K. Hoshinoo, and T. Walter,
Proc. ION GNSS 2009, pp. 1257-1267, Savannah, GA, Sept. 2009
PPT
2008
Modeling Ionospheric Spatial Threat
Based on Dense Observation Datasets for MSAS
T. Sakai, K. Matsunaga, K. Hoshinoo, and T. Walter,
Proc. ION GNSS 2008, Savannah, GA, Sept. 2008
PPT
2007
Mitigating Ionospheric Threat Using a Dense Monitoring Network
T. Sakai, K. Matsunaga, K. Hoshinoo, K. Ito, and T. Walter,
Proc. ION GNSS 2007, pp. 927-938, Fort Worth, TX, Sept. 2007
PPT
2006
Performance Requirement of Velocity Estimation for Airborne-based Downward-looking GPS Occultation
T. Yoshihara, N. Fujii, S. Saitoh, T. Sakai, K. Hoshinoo, K. Matsunaga, T. Tsuda, and Y. Aoyama,
Proc. ION GNSS 2006, pp. 653-661, Fort Worth, TX, Sept. 2006
Implementation of Prototype Satellite-Based Augmentation System (SBAS)
T. Sakai, S. Fukushima, N. Arai, and K. Ito,
IGNSS 2006, Gold Coast, Australia, July 2006
Prototype of Satellite-Based Augmentation System and Evaluation of the Ionospheric Correction Algorithms
T. Sakai, K. Matsunaga, K. Hoshinoo, and T. Walter,
Proc. ION 2006 National Technical Meeting, pp. 368-379,
Monterey, CA, Jan. 2006
PDF PPT
A Study on Detection of Sea Level Variation Using GPS Signal Reflected by Sea Surface
T. Yoshihara, S. Saito, N. Fujii, and T. Sakai,
Proc. ION 2006 National Technical Meeting, pp. 217-223,
Monterey, CA, Jan. 2006
2005
Measurement System of Airborne-Based GPS Down-Looking Occultation and Experimental Results
T. Yoshihara, N. Fujii, K. Hoshinoo, K. Matsunaga, S. Saitoh, T. Sakai, T. Tsuda, Y. Aoyama, and S. Danno,
URSI 28th General Assembly, India, Oct. 2005
Relationship between Barometric Altitude and GPS-Based Height
T. Sakai,
ICAO SCRSP/WG-B, Paris, France, WP/B/9-30, Oct. 2005
PDF
Modified Ionospheric Correction Algorithm for the SBAS Based on Geometry Monitor Concept
T. Sakai, K. Matsunaga, K. Hoshinoo, and T. Walter,
Proc. ION GNSS 2005, pp. 735-747, Long Beach, CA, Sept. 2005
PDF
Measurement System and Experimental Results of Airborne-based Downward-looking GPS Occultation
T. Yoshihara, N. Fujii, K. Hoshinoo, K. Matsunaga, S. Saitoh, T. Sakai,
T. Tsuda, Y. Aoyama, and S. Danno,
Proc. ION GNSS 2005, pp. 290-297, Long Beach, CA, Sept. 2005
Improving Availability of Ionospheric Corrections in the Low Magnetic Latitude Region
T. Sakai, K. Matsunaga, K. Hoshinoo, and T. Walter,
Proc. ION 2005 National Technical Meeting, pp. 569-579,
San Diego, CA, Jan. 2005
PDF
An Investigation of Local-Scale Spatial Gradient of Ionospheric Delay Using the Nation-Wide GPS Network Data in Japan
T. Yoshihara, T. Sakai, N. Fujii, and A. Saitoh,
Proc. ION 2005 National Technical Meeting, pp. 725-734,
San Diego, CA, Jan. 2005
2004
Evaluating Ionospheric Effects on SBAS in the Low Magnetic Latitude Region
T. Sakai, K. Matsunaga, K. Hoshinoo, and T. Walter,
Proc. ION GNSS 2004, pp. 1318-1328, Long Beach, CA, Sept. 2004
PDF
Airborne GPS Down-Looking Occultation Experiments
T. Yoshihara, N. Fujii, K. Hoshinoo, K. Matsunaga, S. Saitoh, T. Sakai,
T. Tsuda, Y. Aoyama, and S. Danno,
Proc. ION GNSS 2004, pp. 1713-1723, Long Beach, CA, Sept. 2004
Correlation Structure of the Equatorial Ionosphere
S. Rajagopal, T. Walter, S. Datta-Barua, J. Blanch, and T. Sakai,
Proc. ION 2004 National Technical Meeting, pp.542-550,
San Diego, CA, Jan. 2004
2003
Experimental GBAS Performance at the Approach Phase
S. Saitoh, S. Fukushima, T. Yoshihara, and N. Fujii,
Proc. ION 2003 National Technical Meeting, pp. 317-325,
Anaheim, CA, Jan. 2003
2001
Flight Experiment of GBAS in Japan
S. Saitoh, S. Fukusima, and N. Fujii,
Proc. ION GPS 2001, pp. 1757-1765, Salt Lake City, UT, Sept. 2001
2000
Extended Availability and Continuity Computation Method to GPS Augmentations for Approach and Landing
T. Sakai and K. Koremura,
Proc. 2000 National Technical Meeting, pp. 408-417,
Anaheim, CA, Jan. 2000
The latest status of Quasi-Zenith Satellite System (QZSS) and its future expansion
T. Sakai and S. Kogure,
Proc. ION GNSS+ 2019,
Miami, FL, Sept. 2019
PDF
2018
QZSS Update
T. Sakai and S. Kogure,
Proc. ION GNSS+ 2018,
Miami, FL, Sept. 2018
PDF
Evaluation of Quasi-Zenith Satellite System L5S Signal
Chiu-Mei Wu, Shau-Shiun Jan, and Takeyasu Sakai,
Proc. ION 2018 International Technical Meeting, pp.339-352,
Reston, VA, Jan. 2018
2017
The Experiment on DFMC SBAS via QZSS L5S Signal
T. Sakai,
International Committee on GNSS (ICG) WG-B, Kyoto, Japan, Dec. 2017
PPT
DFMC SBAS Trial with QZSS L5S Signal
T. Sakai,
Multi-GNSS Asia Conference (MGA/9),
Jakarta, Indonesia, Oct. 2017
Japan: The Latest Update on Quasi-Zenith Satellite System (QZSS) Program
S. Kogure, H. Moriyama, A. Matsumoto,
S. Sakabe, T. Sato, K. Nakaitani, H. Emura,
J. Awano, M. Miyoshi, K. Yoshikawa, and T. Sakai,
Proc. ION Pacific PNT Meeting,
Honolulu, HI, May 2017
PPT
Status of Japanese QZSS and SBAS Programs
T. Sakai,
APEC GNSS Implementation Team (GIT),
Chinese Taipei, April 2017
PPT
2016
Test of QZSS L1-SAIF Based on the MADOCA Real-Time Products
T. Sakai, K. Satoh, and Y. Wakabayashi,
Multi-GNSS Asia Conference (MGA/8),
Manila, Philippines, Nov. 2016
PPT
Status of the Japanese QZSS Program
T. Sakai,
Munich Satellite Navigation Summit,
Munich, Germany, March 2016
PPT
2015
Generation of the QZSS L1-SAIF Message from the MADOCA Realtime Products
T. Sakai and S. Kogure,
Proc. ION Pacific PNT Meeting,
Honolulu, HI, April 2015
2014
Ionospheric Correction at the Southwestern Islands for the QZSS L1-SAIF
T. Sakai, K. Hoshinoo, and K. Ito,
Proc. ION 2014 International Technical Meeting,
San Diego, CA, Jan. 2014
PPT
2013
GPS/GLONASS/QZSS Multi-GNSS Augmentation Trial by L1-SAIF Signal
T. Sakai,
5th Asia Oceania Regional Workshop on GNSS, Hanoi, Vietnam, Dec. 2013
T. Sakai, H. Yamada, K. Hoshinoo, and K. Ito,
Proc. ION 2013 International Technical Meeting,
San Diego, CA, Jan. 2013
PPT
2012
Multi-GNSS Augmentation by L1-SAIF Signal: Preliminary Results
T. Sakai,
4th Asia Oceania Regional Workshop on GNSS, Kuala Lumpur, Malaysia, Dec. 2012
PPT
The L1-SAIF Signal: How was it designed to be used?
T. Sakai,
Proc. ION GNSS 2012, Nashville, TN, Sept. 2012
PPT
Real-time Simulation of QZSS Regional Satellite Navigation
H. Yamada, S. Fujita, S. Saitoh, T. Sakai, and K. Ito,
Proc. ION GNSS 2012, Nashville, TN, Sept. 2012
Ranging Quality of QZSS L1-SAIF Signal
T. Sakai, H. Yamada, and K. Ito,
Proc. ION 2012 International Technical Meeting,
Newport Beach, CA, Jan. 2012
PPT
Regional Satellite Navigation by Using MSAS and QZSS
H. Yamada, T. Sakai, and K. Ito,
Proc. ION 2012 International Technical Meeting,
Newport Beach, CA, Jan. 2012
2011
QZSS Observation Data Available to the Public
T. Sakai,
3rd Asia-Oceania Regional Workshop on GNSS,
Jeju Island, South Korea, Nov. 2011
PPT
Generation and Evaluation of QZSS L1-SAIF Ephemeris Information
T. Sakai, H. Yamada, S. Fukushima, and K. Ito,
Proc. ION GNSS 2011, Portland, OR, Sept. 2011
PPT
QZSS L1-SAIF Initial Experiment Results
T. Sakai, S. Fukushima, and K. Ito,
Proc. ION 2011 International Technical Meeting, pp. 1133-1142,
San Diego, CA, Jan. 2011
PPT
2010
Development of QZSS L1-SAIF Augmentation Signal
T. Sakai, S. Fukushima, and K. Ito,
The 2nd ENRI International Workshop on CNS/ATM (EIWAC/2), Tokyo, Nov. 2010
PPT
Recent Development of QZSS L1-SAIF Master Station
T. Sakai, S. Fukushima, and K. Ito,
Proc. ION 2010 International Technical Meeting, pp. 354-364,
San Diego, CA, Jan. 2010
PPT
2009
Ionospheric and Tropospheric Correction Processors for SBAS and QZSS L1-SAIF
T. Sakai, S. Fukushima, and K. Ito,
Proc. ION 2009 International Technical Meeting, pp. 312-323,
Anaheim, CA, Jan. 2009
PPT
2008
Implementation of the QZSS L1-SAIF Message Generator
T. Sakai, S. Fukushima, N. Takeichi, and K. Ito,
Proc. ION 2008 National Technical Meeting, pp. 464-476,
San Diego, CA, Jan. 2008
PPT
2007
Tropospheric Delay Correction for the Augmentation System using Quasi-Zenith Satellite System
N. Takeichi, T. Sakai, S. Fukushima, and K. Ito,
IEICE WSANE 2007, Perth, Australia, April 2007
Augmentation Performance of QZSS L1-SAIF Signal
T. Sakai, S. Fukushima, N. Takeichi, and K. Ito,
Proc. ION 2007 National Technical Meeting, pp. 411-421, San Diego, CA, Jan. 2007
PDF PPT
2006
Quasi-Real-Time Signal Delay Estimation of Remote Synchronization System for Onboard Crystal Oscillators
N. Takasaki, A. Iwasaki, T. Iwata, M. Imae, T. Suzuyama, F. Tappero, H. Murakami, N. Arai, T. Sakai, S. Fukushima, and K. Ito,
International Symposium on Space Technology and Science,
Kanazawa, Japan, June 2006
Copyright (C) 2007-2012, ENRI -
For comments or suggestion, please contact:
sakai@enri.go.jp