|
|
BEACON eSpace at Jet Propulsion Laboratory >
JPL Technical Report Server >
JPL TRS 1992+ >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/2014/41915
|
| Title: | Instrument pointing capabilities : past, present, and future |
| Authors: | Blackmore, Lars
Murray, Emmanuell
Scharf, Daniel P.
Aung, Mimi
Bayard, David
Brugarolas, Paul
Hadaegh, Fred
Lee, Allan
Milman, Mark
Sirlin, Sam
Kang, Bryan |
| Keywords: | space telescopes
interferometers
celestial targets |
| Issue Date: | 4-Feb-2011 |
| Publisher: | Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2011. |
| Citation: | AAS Guidance and Control Conference, Breckenridge, Colorado, February 4, 2011 |
| Abstract: | This paper surveys the instrument pointing capabilities of past, present and future space telescopes and interferometers. As an important aspect of this survey, we present a taxonomy for “apples-to-apples” comparisons of pointing performances. First, pointing errors are defined relative to either an inertial frame or a celestial target. Pointing error can then be further sub-divided into DC, that is, steady state, and AC components. We refer to the magnitude of the DC error relative to the inertial frame as absolute pointing accuracy, and we refer to the magnitude of the DC error relative to a celestial target as relative pointing accuracy. The magnitude of the AC error is referred to as pointing stability. While an AC/DC partition is not new, we leverage previous work by some of the authors to quantitatively clarify and compare varying definitions of jitter and time window averages. With this taxonomy and for sixteen past, present, and future missions, pointing accuracies and stabilities, both required and achieved, are presented. In addition, we describe the attitude control technologies used to and, for future missions, planned to achieve these pointing performances. |
| URI: | http://hdl.handle.net/2014/41915 |
| Appears in Collections: | JPL TRS 1992+
|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
|
