Stationkeeping for an occulter-based exoplanetary imaging mission

Dan Sirbu; Ephraim J. Chen; Matthew S. Isakowitz; Rachel L. Johnson; Daniel W. Maas; N. Jeremy Kasdin

Stationkeeping for an occulter-based exoplanetary imaging mission

Dan Sirbu, Ephraim J. Chen, Matthew S. Isakowitz, Rachel L. Johnson, Daniel W. Maas, N. Jeremy Kasdin

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Space-based direct exoplanetary imaging using an external occulter requires formation flight of a spacecraft constellation. Here we are interested in the position control of a single occulter aligned with the telescope and target star. We consider the nonlinear relative motion spacecraft dynamics in the circularly restricted three-body model in the rotating Sun-Earth frame and generation of the unstable reference trajectory of the occulter in this corotating frame. We implement a linear quadratic regulator for position control of the occulter around a nominal trajectory, and implement an extended Kalman filter for state reconstruction of the occulter relative to the telescope using a least squares fit against the expected out-of-band leakage from the star based on the occulter shape. We provide simulation results of the integrated control and estimation scheme in the presence of solar radiation pressure.

Original language	English (US)
Title of host publication	Guidance and Control 2010 - Advances in the Astronautical Sciences
Subtitle of host publication	Proceedings of the 33rd Annual AAS Rocky Mountain Guidance and Control Conference
Pages	129-148
Number of pages	20
State	Published - 2010
Event	33rd Annual AAS Rocky Mountain Guidance and Control Conference - Breckenridge, CO, United States Duration: Feb 5 2010 → Feb 10 2010

Publication series

Name	Advances in the Astronautical Sciences
Volume	137
ISSN (Print)	0065-3438

Other

Other	33rd Annual AAS Rocky Mountain Guidance and Control Conference
Country/Territory	United States
City	Breckenridge, CO
Period	2/5/10 → 2/10/10

All Science Journal Classification (ASJC) codes

Aerospace Engineering
Space and Planetary Science

Cite this

Sirbu, D., Chen, E. J., Isakowitz, M. S., Johnson, R. L., Maas, D. W., & Kasdin, N. J. (2010). Stationkeeping for an occulter-based exoplanetary imaging mission. In Guidance and Control 2010 - Advances in the Astronautical Sciences: Proceedings of the 33rd Annual AAS Rocky Mountain Guidance and Control Conference (pp. 129-148). (Advances in the Astronautical Sciences; Vol. 137).

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title = "Stationkeeping for an occulter-based exoplanetary imaging mission",

abstract = "Space-based direct exoplanetary imaging using an external occulter requires formation flight of a spacecraft constellation. Here we are interested in the position control of a single occulter aligned with the telescope and target star. We consider the nonlinear relative motion spacecraft dynamics in the circularly restricted three-body model in the rotating Sun-Earth frame and generation of the unstable reference trajectory of the occulter in this corotating frame. We implement a linear quadratic regulator for position control of the occulter around a nominal trajectory, and implement an extended Kalman filter for state reconstruction of the occulter relative to the telescope using a least squares fit against the expected out-of-band leakage from the star based on the occulter shape. We provide simulation results of the integrated control and estimation scheme in the presence of solar radiation pressure.",

author = "Dan Sirbu and Chen, {Ephraim J.} and Isakowitz, {Matthew S.} and Johnson, {Rachel L.} and Maas, {Daniel W.} and Kasdin, {N. Jeremy}",

year = "2010",

language = "English (US)",

isbn = "9780877035619",

series = "Advances in the Astronautical Sciences",

pages = "129--148",

booktitle = "Guidance and Control 2010 - Advances in the Astronautical Sciences",

}

Sirbu, D, Chen, EJ, Isakowitz, MS, Johnson, RL, Maas, DW & Kasdin, NJ 2010, Stationkeeping for an occulter-based exoplanetary imaging mission. in Guidance and Control 2010 - Advances in the Astronautical Sciences: Proceedings of the 33rd Annual AAS Rocky Mountain Guidance and Control Conference. Advances in the Astronautical Sciences, vol. 137, pp. 129-148, 33rd Annual AAS Rocky Mountain Guidance and Control Conference, Breckenridge, CO, United States, 2/5/10.

Stationkeeping for an occulter-based exoplanetary imaging mission. / Sirbu, Dan; Chen, Ephraim J.; Isakowitz, Matthew S. et al.
Guidance and Control 2010 - Advances in the Astronautical Sciences: Proceedings of the 33rd Annual AAS Rocky Mountain Guidance and Control Conference. 2010. p. 129-148 (Advances in the Astronautical Sciences; Vol. 137).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - Stationkeeping for an occulter-based exoplanetary imaging mission

AU - Sirbu, Dan

AU - Chen, Ephraim J.

AU - Isakowitz, Matthew S.

AU - Johnson, Rachel L.

AU - Maas, Daniel W.

AU - Kasdin, N. Jeremy

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AB - Space-based direct exoplanetary imaging using an external occulter requires formation flight of a spacecraft constellation. Here we are interested in the position control of a single occulter aligned with the telescope and target star. We consider the nonlinear relative motion spacecraft dynamics in the circularly restricted three-body model in the rotating Sun-Earth frame and generation of the unstable reference trajectory of the occulter in this corotating frame. We implement a linear quadratic regulator for position control of the occulter around a nominal trajectory, and implement an extended Kalman filter for state reconstruction of the occulter relative to the telescope using a least squares fit against the expected out-of-band leakage from the star based on the occulter shape. We provide simulation results of the integrated control and estimation scheme in the presence of solar radiation pressure.

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BT - Guidance and Control 2010 - Advances in the Astronautical Sciences

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ER -

Stationkeeping for an occulter-based exoplanetary imaging mission

Abstract

Publication series

Other

All Science Journal Classification (ASJC) codes

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