GLONASS-R - A novel method of sensing the environment by means of navigation satellite signals
| Project/Area Number |
25740011
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | National Institute of Information and Communications Technology |
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Principal Investigator |
ホビガー トーマス 独立行政法人情報通信研究機構, 電磁波計測研究所時空標準研究室, 主任研究員 (20533798)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Discontinued (Fiscal Year 2014)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | GNSS-R / GLONASS / sea-level / software-defined radio / sea level / reflectometry |
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| Outline of Annual Research Achievements |
The first year of the project was devoted to hard- and software development based on the principles of software-defined radio. A GLONASS-R prototype system has been developed with off-the-shelf components only. Although all signal processing has been implemented on the software side, real-time operation could be verified already in the first months of the project. After further optimization, bug-fixing and performance tests it was clear that I would be able to test the system earlier than anticipated. After a basic 48h conceptual test at our institute in Tokyo, it was decided to ship the system to the Onsala Space Observatory, Sweden, that has an operational GPS-based GNSS-R system. Over a period of two weeks in October 2013, GPS-based GNSS-R sea-level monitoring and measurements with the newly developed GLONASS-R system were carried out in parallel. In addition, data from co-located tide gauge measurements were available for comparison. With the data taken from the field experiment not only the feasibility of the GLONASS-R concept could be demonstrated, but it could be shown that for calm sea surface conditions, the GLONASS-R prototype can achieve an accuracy of about 1-2 cm, outperforming other GNSS-R systems at that site. A corresponding peer-reviewed paper has been published and cooperations for future experiments and validation campaigns could be established. However, as I moved to a new position abroad I returned the budget for the second year. Future collaboration with Japanese institutes will include the work carried out within this project.
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Report
(2 results)
Research Products
(15 results)
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[Journal Article] Toward a Precise Frequency Comparison with VLBI Technique2013
Author(s)
K. Takefuji, M. Sekido, H. Ujihara, T. Hobiger, M. Tsutsumi, S. Hasegawa, Y. Miyauchi, R. Ichikawa, Y. Koyama, and T. Kondo,
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Journal Title
NICT IVS Technical Development Center News
Volume: N.N.
Pages: 25-28
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[Presentation] First results and next steps of the IAG-ICCT Joint Study Group 0.4 ”Coordinate systems in numerical weather models2013
Author(s)
Hobiger T., Boehm J., Boy J.-P., Desjardins C., Foster J., Gegout P., Haas R. , Ichikawa R., MacMillan D., Ming S.-G., Niell A., Nievinski F., McAdam M., Nordman M., Salstein D., Santos M., Schindelegger M., van Dam T., Vedel H., Wickert J., Zus F.
Organizer
VIII Hotine Marussi Symposium
Place of Presentation
Rome, Italy, Univ. La Sapienza
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