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SIRTF Focal Plane Survey: A Pre-flight Error AnalysisThis report contains a pre-flight error analysis of the calibration accuracies expected from implementing the currently planned SIRTF focal plane survey strategy. The main purpose of this study is to verify that the planned strategy will meet focal plane survey calibration requirements (as put forth in the SIRTF IOC-SV Mission Plan [4]), and to quantify the actual accuracies expected. The error analysis was performed by running the Instrument Pointing Frame (IPF) Kalman filter on a complete set of simulated IOC-SV survey data, and studying the resulting propagated covariances. The main conclusion of this study is that the all focal plane calibration requirements can be met with the currently planned survey strategy. The associated margins range from 3 to 95 percent, and tend to be smallest for frames having a 0.14" requirement, and largest for frames having a more generous 0.28" (or larger) requirement. The smallest margin of 3 percent is associated with the IRAC 3.6 and 5.8 micron array centers (frames 068 and 069), and the largest margin of 95 percent is associated with the MIPS 160 micron array center (frame 087). For pointing purposes, the most critical calibrations are for the IRS Peakup sweet spots and short wavelength slit centers (frames 019, 023, 052, 028, 034). Results show that these frames are meeting their 0.14" requirements with an expected accuracy of approximately 0.1", which corresponds to a 28 percent margin.
Document ID
20090019022
Acquisition Source
Jet Propulsion Laboratory
Document Type
Other
External Source(s)
Authors
Bayard, David S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Brugarolas, Paul B.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Boussalis, Dhemetrios
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kang, Bryan H.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 24, 2013
Publication Date
September 1, 2003
Subject Category
Space Transportation And Safety
Report/Patent Number
JPL-D-26678
Distribution Limits
Public
Copyright
Other
Keywords
pointing
kalman filter
calibrations

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