Title :
Spacecraft pointing control criteria for high resolution spectroscopy
Author :
Bayard, David S.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
4/1/1999 12:00:00 AM
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;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
