국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Michigan Orbital DEbris Survey Telescope Observations of the Geosynchronous Orbital Debris Environment. Observing Years: 2004-2006
저자	Abercrombly, K. J.;; Seitzer, P.;; Barker, E. S.;; Cowardin, H. M.;; Matney, M. J.
Keyword	DATA ACQUISITION;; GEOSYNCHRONOUS ORBITS;; SCHMIDT TELESCOPES;; SPACE DEBRIS;; SURVEYS
URL	http://hdl.handle.net/2060/20100031297
보고서번호	NASA/TP-2010-216129
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	Orbital debris is a concern to nations using satellites or launch space vehicles. The debris field scattered near Earth''s geosynchronous orbit (GEO) poses a threat to anything residing in or passing through it. To mitigate risk and minimize this environment''s expansion, the environment must be understood. NASA uses the Michigan Orbital DEbris Survey Telescope (MODEST), a University of Michigan-owned 0.61-m aperture Schmidt telescope at Cerro Tololo Inter-American Observatory in Chile, to help characterize the GEO debris environment. Objectives for this survey are to determine the extent and character of debris in GEO, specifically by obtaining distributions for brightness, inclination (INC), right ascension of ascending node (RAAN), and mean motion for the debris. This report describes the collection and analysis of 42 nights of data in contract year (CY) 2004, 23 nights in CY 2005, and 35 nights in CY 2003. Eighteen objects on average were detected nightly: in CY 2004, 72% were correlated targets (CTs) and 27% were uncorrelated targets (UCTs); in CY 2005, 74% were CTs and 26% were UCTs;; and in CY 2006, 76% were CTs and 24% were UCTs. Estimates can be made from correlated objects on errors associated with derived quantities of range, INC, and RAAN.