@inproceedings{oai:jaxa.repo.nii.ac.jp:00038716, author = {小田, 寛 and 柳沢, 俊史 and 黒崎, 裕久 and 田川, 真 and Oda, Hiroshi and Yanagisawa, Toshifumi and Kurosaki, Hirohisa and Tagawa, Makoto}, book = {第58回宇宙科学技術連合講演会講演集, Proceedings of 58th Space Sciences and Technology Conference}, month = {Nov}, note = {第58回宇宙科学技術連合講演会(2014年11月12日-14日. 長崎ブリックホール), 長崎市, 長崎県, "We report on optical observations and an efficient detection method of space debris around the geosynchronous Earth orbit (GEO). We started to operate our new Australia Remote Observatory (ARO) where an 18 cm optical telescope with a charged-coupled device (CCD) camera covering a 3.17-degree field of view is used. We employ the horizontal coordinate system in which the stars move horizontally in an image, while GEO objects are relatively stationary. In our operation, the exposure time of light frame is set to be 3 seconds. In the uniform linear motion detection method, we select a sufficient number of object candidates (500 candidates in this paper) from each image based on their shape and intensity. Then we search a sequence of objects showing the uniform linear motion in the successive 18 images. As a result, we detected about 300 GEO objects up to magnitude of 15 among 5 night data. We also identified the objects from the two-line-element (TLE) data catalogue publicly provided by the U.S. Strategic Command (USSTRATCOM). We found that about one third of the detected objects are not listed in the catalogue. We conclude that our ARO and detection method posse a high efficiency detection of GEO objects despite the use of comparatively inexpensive observation and analysis system. We also describe the image-processing specialized for the detection of GEO objects (not for usual astronomical objects like stars) in this paper.", 資料番号: AC1500076000, レポート番号: JSASS-2014-4643}, publisher = {日本航空宇宙学会(JSASS), The Japan Society for Aeronautical and Space Sciences (JSASS)}, title = {スペースデブリの光学観測、画像解析および検出手法}, year = {2014} }