国土地理院 栗原さんのご尽力により，GGOS Japan（2019年5月に GGOS ワーキンググループより改称）のウェブサイトが開設されました．GGOS Affiliate として，GGOS 本体のサイト ggos.org の下に設置させていただいています．ウィーンの GGOS 事務局の方々にもお世話になりました．
昨年大量に印刷したリーフレットを少しだけ更新した 2019.06 版も置かれています．
otsubo のすべての投稿
2019 測地学サマースクール＠国土地理院
今年の測地学サマースクールは，つくばの国土地理院で開催されます．8月22日(木)～23日(金)です．国土地理院の宗包さんが取りまとめをしてくださっており，「暮らしの中の測地学」というテーマになっています．大坪も講師として参加予定です．楽しみにしています．
ふるってご参加を．詳しくはこちらへ
http://www.geod.jpn.org/contents/sumsch/2019/index.html
Ajisai reflectivity study published
A new study on Japanese Geodetic Satellite Ajisai, led by Dr D Kucharski, has just been published online. Using a photometry observation system in Graz, Austria, the reflectivity of Ajisai surface could be very precisely monitored.
Otsubo is one of the coauthors.
Title: Hypertemporal photometric measurement of spaceborne mirrors specular reflectivity for Laser Time Transfer link model
Journal: Advances in Space Research (Available online 28 May 2019)
Stuttgart 100 kHz SLR paper published
DLR Stuttgart group has just published a paper on their innovative 100 kHz SLR system. Otsubo has contributed as a coauthor.
Authors: D. Hampf, E. Schafer, F. Sproll, T. Otsubo, P. Wagner, W. Riede
Title: Satellite laser ranging at 100 kHz pulse repetition rate
Journal: CEAS Space Journal, doi 10.1007/s12567-019-00247-x
ILRS Technical Workshop 2019 in Stuttgart
The website for “ILRS Technical Workshop 2019” (21-25 October 2019) is ready, thanks to DLR Stuttgart colleagues. See you in Stuttgart!
新学期：Member と Education ページ更新
新学期になりました．Member ページと Education ページを更新しました．新3年生ゼミ生氏名は後日追加します．
Toshimichi Otsubo elected Chair of the ILRS Governing Board
SLR Station Performance 2017-2018
One-year precise analysis for various systematic biases was presented at the 21st International Workshop on Laser Ranging held in Canberra, 5-9 November 2018. The 2017-2018 quality-control charts are now available from ILRS NESC Forum.
Worldwide collaboration paper on SLR QC now online
SLR quality control activities in a number of institutes are published online in Journal of Geodesy. 10 authors from 8 countries!
Title: Rapid response quality control service for the laser ranging tracking network
Authors: Toshimichi Otsubo, Horst Müller, Erricos C. Pavlis, Mark H. Torrence, Daniela Thaller, Vladimir D. Glotov, Xiaoya Wang, Krzysztof Sośnica, Ulrich Meyer, and Matthew J. Wilkinson
https://doi.org/10.1007/s00190-018-1197-0
It will be in the Special Issue on Satellite Laser Ranging.
Our solar radiation pressure study published
A former student of our laboratory has written a paper on the solar radiation pressure acting on the geodetic satellites Ajisai and LAGEOS, which has just been accepted in Advances in Space Research. Well done!
Title: Time-varying solar radiation pressure on Ajisai in comparison with LAGEOS satellites
Authors: A Hattori and T Otsubo