Spacecraft pointing control criteria for high resolution spectroscopy

Author

Bayard, David S.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

Volume

35

Issue

2

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

637

Lastpage

644

Abstract

A new pointing control criterion is derived to support high resolution space spectroscopy. The criterion maps desired specifications on allowable flux offset (imposed by scientists for accurate calculation of spectral line ratios) into standard pointing control definitions in terms of bias and jitter. In contrast to previous derivations, the new criterion is exposure dependent, and fully captures the beneficial smoothing effect of longer spectroscopy exposures on reducing flux offset. The criterion is easily visualized and allows a complete characterization of the allowable design space

Keywords

aerospace control; astronomical telescopes; infrared spectroscopy; jitter; optical control; pointing systems; space vehicles; SIRTF IRS payload; allowable design space; allowable flux offset; bias; desired specifications mapping; exposure dependent; flux offset reduction; high resolution space spectroscopy; jitter; longer spectroscopy exposures; reconfigurable control design; slit symmetry; smoothing effect; spacecraft pointing control criteria; spectral line ratios; standard pointing control definitions; two state observer; Extraterrestrial measurements; Infrared spectra; Jitter; Laboratories; Payloads; Propulsion; Smoothing methods; Space technology; Space vehicles; Spectroscopy;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.766944

Filename

766944