On 22 Feb 2017, Otsubo presented “Satellite Laser Ranging as a Geodetic Technique: Current and Future Network” at Onsala Space Observatory Seminar. He had caught a cold, but has recovered just in time.
「Research」カテゴリーアーカイブ
スウェーデン滞在開始
Our EPS Paper on Springer Open Blog
Our paper “Effective expansion of satellite laser ranging network to improve global geodetic parameters” published in Earth, Planets and Space in April 2016, is chosen as an article on Springer Open Blog.
http://blogs.springeropen.com/springeropen/2016/12/20/toward-effective-geodetic-observation-network/
Wettzell 測地観測所訪問
地下室にて重力測定
講演報告: Special Seminar, AIUB, Switzerland
On 12 Dec 2016, Otsubo visited the Zimmerwald Optical Ground Station to see its SLR, GNSS and space debris tracking facility, and later visited the Astronomical Institute of the University of Bern (AIUB) where he presented “SLR station network: for the near future and the far future” in AIUB Special Seminar. We appreciate the opportunity and the warm hospitality.
講演報告: TUM Kolloquium Satellitennavigation
On 23 Nov 2016, Otsubo visited Technische Universität München (TUM) and presented “Satellite Laser Ranging Station Network: Simulations and Prospects for the Future” at Kolloquium Satellitennavigation (website). We thank TUM colleagues for this opportunity and the good discussions.
Our paper on the home page of EPS
This spring our paper “Effective expansion of satellite laser ranging network to improve global geodetic parameters” was published in Earth, Planets and Space.
Today, 14 Nov 2016, the paper (Otsubo et al. 2016) is picked up on the home page of this journal → Earth, Planets and Space.
日本測地学会講演会:参加および講演
先週,奥州市文化会館にて開催された日本測地学会第126回講演会に参加してきました.口頭発表を1件行いました.
服部晃久,大坪俊通 「測地衛星の表面材質と太陽輻射圧係数」
国立天文台水沢キャンパスの見学や,江刺地球潮汐観測施設の見学もさせていただきました.多くの方々にお世話になりました.ありがとうございます.
SLR Station Performance Charts: July 2015 to June 2016
T Otsubo hosted one of the ‘clinic’ session booths during the 20th International Workshop on Laser Ranging in Potsdam. It covers both quantity and quality aspects of SLR stations. The following are the links to the charts.
Hit-rate (observation success rate) over all fly-over observation chances (El > 20 deg)
(Pages 3 and 5 are just rescaled-without-Yarragadee version of Pages 2
and 4 resp)
http://geo.science.hit-u.ac.jp/slr/bias/2016sp/SlrDataDensity.2016.pdf
LAGEOS-1+2 NP Post-POD RMS vs Session-by-session system delay RMS
(Page 1 >> ZOOM >> Page 2 >> ZOOM >> Page 3)
http://geo.science.hit-u.ac.jp/slr/bias/2016sp/DelayVsLag.pdf
System delay time series
(1 year span)
http://geo.science.hit-u.ac.jp/slr/bias/2016sp/CalTimeSeries1y.pdf
(5 day span; one of densely observed periods)
http://geo.science.hit-u.ac.jp/slr/bias/2016sp/CalTimeSeries5d.pdf
System delay measurement frequency
= Interval between calibration record with different time tags
(blue parts: not a unique measurement? Identical records with different time tags found.)
http://geo.science.hit-u.ac.jp/slr/bias/2016sp/CalInterval.pdf
(X-axis extended for 1824, 1873, 1884 and 7820)
http://geo.science.hit-u.ac.jp/slr/bias/2016sp/CalIntervalLong.pdf
Range residual vs System delay
http://geo.science.hit-u.ac.jp/slr/bias/2016sp/SortDelay6.pdf
Range residual vs Intensity (# of returns per NP)
http://geo.science.hit-u.ac.jp/slr/bias/2016sp/SortIntensity6.pdf
Range residual vs Single-shot RMS
http://geo.science.hit-u.ac.jp/slr/bias/2016sp/SortRms6.pdf
Range residual vs Sun Elevation (day vs night)
http://geo.science.hit-u.ac.jp/slr/bias/2016sp/SortSunEl6.pdf
Toshimichi Otsubo <t.otsubo@r.hit-u.ac.jp> and Akihisa Hattori
Hitotsubashi University










