NDLI: Attitude determination and control for the new millennium EO-1 spacecraft

Content Provider	IEEE Xplore Digital Library
Author	Speer, D. Sanneman, P.
Copyright Year	1998
Description	Author affiliation: Litton Amecom/Space Syst. Oper., College Park, MD, USA (Speer, D.)
Abstract	The Earth Orbiter 1 (EO-1) mission is the first in a series of smaller, faster, cheaper Earth observing spacecraft that will be developed through Goddard Space Flight Center (GSFC) under NASA's New Millennium Program (NMP). In a broad sense, the mission objectives focus on the development and flight testing of new remote sensing spacecraft and operations technologies that could be applied to 21st century NASA missions. A major goal for EO-1 is flight validation of the Advanced Land Imager (ALI), a Landsat-type hyper-spectral Earth science instrument being built by the MIT Lincoln Laboratory. The pointing and stability requirements for this "push-broom" imaging instrument are the main drivers of attitude control performance. The EO-1 Attitude Control Subsystem (ACS) is three-axis stabilized with on-axis reaction wheels for control actuation and a hydrazine propulsion system for /spl Delta/V capability. Pointing requirements for the roll, pitch, and yaw axes are 0.02/spl deg/, 0.02/spl deg/, and 0.01/spl deg/ 2-sigma respectively, and the ACS supports cross-track pointing of /spl plusmn/6.5/spl deg/ about the roll axis. Sub-arcsecond jitter requirements will be met by adjusting the operating profiles of the on-board actuators. There are ACS operating modes for "B-dot" despin following launch vehicle separation, initial sun acquisition, nadir-pointed science data collection, constant slew rate lunar and solar inertial calibrations, and /spl Delta/V manoeuvres for orbit adjustments and close formation flight.
Starting Page	93
Ending Page	109
File Size	1799274
Page Count	17
File Format	PDF
ISBN	0780343115
ISSN	1095323X
DOI	10.1109/AERO.1998.686809
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-03-28
Publisher Place	Colorado
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Position measurement Earth Space vehicles Space technology Remote sensing Instruments Space missions Testing NASA Satellites
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Space and Planetary Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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