JWST on-orbit multi-field wavefront control with a Kalman filter

Details JWST on-orbit multi-field wavefront control with a Kalman filter JWST on-orbit multi-field wavefront control with a Kalman filter

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5867..232l&link_type=abstract

Optical Modeling and Performance Predictions II. Edited by Kahan, Mark A. Proceedings of the SPIE, Volume 5867, pp. 232-245 (

Computer Science

Performance

Scientific paper

An effective multi-field wavefront control (WFC) approach is demonstrated for the James Webb Space Telescope (JWST) on-orbit optical telescope element (OTE) fine-phasing using wavefront measurements at the NIRCam pupil, and the optical and computational implications of this approach are discussed. The integration of a Kalman Filter as an optical state estimator into the JWST wavefront control process to further improve the robustness of the fine-phasing JWST OTE alignment will also be discussed. Through a comparison of WFC performances between the JWST on-orbit and ground-test optical system configurations, the connection (and a possible disconnection) between WFC and optical system alignment under these circumstances are analyzed. Our MACOS-based [2] computer simulation results will be presented and discussed.

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