NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 54 of 5309
Spitzer Instrument Pointing Frame (IPF) Kalman Filter Algorithm
External Online Source: hdl:2014/41281
Author and Affiliation:
Bayard, David S.(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)
Abstract: This paper discusses the Spitzer Instrument Pointing Frame (IPF) Kalman Filter algorithm. The IPF Kalman filter is a high-order square-root iterated linearized Kalman filter, which is parametrized for calibrating the Spitzer Space Telescope focal plane and aligning the science instrument arrays with respect to the telescope boresight. The most stringent calibration requirement specifies knowledge of certain instrument pointing frames to an accuracy of 0.1 arcseconds, per-axis, 1-sigma relative to the Telescope Pointing Frame. In order to achieve this level of accuracy, the filter carries 37 states to estimate desired parameters while also correcting for expected systematic errors due to: (1) optical distortions, (2) scanning mirror scale-factor and misalignment, (3) frame alignment variations due to thermomechanical distortion, and (4) gyro bias and bias-drift in all axes. The resulting estimated pointing frames and calibration parameters are essential for supporting on-board precision pointing capability, in addition to end-to-end 'pixels on the sky' ground pointing reconstruction efforts.
Publication Date: Jun 30, 2004
Document ID:
20090022181
(Acquired Jun 09, 2009)
Subject Category: OPTICS
Report/Patent Number: JPL-D-24809
Document Type: Technical Report
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 156p; In English; Original contains color and black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: GYROSCOPIC STABILITY; KALMAN FILTERS; CALIBRATING; POINTING CONTROL SYSTEMS; SPACE INFRARED TELESCOPE FACILITY; VISUAL PERCEPTION; BORESIGHTS; MIRRORS; DISTORTION; SYSTEMATIC ERRORS; TELESCOPES
Other Descriptors: CALIBRATION; POINTING; KALMAN FILTERING
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 24, 2011
Contact Us