Orbits of geosynchronous satellite constellations for interferometric Earth imaging

Mallory, Gregory J. W.; Jilla, Cyrus D.; Miller, David W.

doi:10.2514/6.1998-4379

Cited by 3 publications

(1 citation statement)

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“…Next, a formation maintenance controller must be designed to enable the spacecraft to undergo periodic motion such that a relative spatial pattern persists for several orbits with minimal propellant expenditure. Preliminary formation designs for aperture synthesis have been considered in References [5,6] whereas some feasible spatial formation patterns have been identified in Reference [7]. Finally, some preliminary control designs for formation configuration have been considered in References [8,9].…”

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Adaptive output feedback tracking control of spacecraft formation

Wong¹,

Kapila²,

Sparks

2002

Intl J Robust & Nonlinear

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SUMMARYIn this paper, an adaptive, output feedback control design methodology is presented for a spacecraft formation flying (SFF) system. A Lagrangian derivation of the SFF model is considered to produce position dynamics for follower spacecraft #n relative to follower spacecraft #ðn À 1Þ, where n is an arbitrary positive integer, assuming that the leader spacecraft in the formation follows a no-thrust, natural, elliptical orbit. Next, a control law is designed to provide a filtered velocity measurement and a desired adaptive compensation with semi-global, asymptotic, relative position tracking. To show the efficacy of the control algorithm, all desired trajectories are generated online by numerically solving the unperturbed nonlinear SFF dynamics with initial conditions satisfying a no-thrust, natural orbit constraint equation. The proposed control law is simulated for the case of two and three spacecraft and is shown to yield semiglobal, asymptotic tracking of the relative position in addition to the convergence of disturbance parameter estimates.

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Adaptive output feedback tracking control of spacecraft formation

Wong¹,

Kapila²,

Sparks

2002

Intl J Robust & Nonlinear

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A survey of spacecraft formation flying guidance and control (part 1): guidance

Scharf

Hadaegh

Ploen

Proceedings of the 2003 American Control Conference, 2003.

204

170

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Absfracf-This paper provides a comprehensive survey of spacecraft formation flying guidance (FFG). Here by the term guidance we mean both path planning (i.e., reference trajectory generation) and optimal, open Imp control design. FFG naturally divides into two areas: Deep Space (DS), in which relative spacecraft dynamics reduce to double integrator form, and Planetary Orbital Environments (POE), in which they do not (e.g. libration point formations). Both areas consider optimal formation reconfigurations. In addition, DS FFG addresses optimal U, v-coverages for multiple spacecraft interferometers and rest-to-rest rotations. The main focus of the POE literature, however, is "passive relative orbits" or PROs. PROs are thrustfree periodic relative spacecraft trajmtories used to design fuelefficient formations. Finally, we present a brief overview of robotic path planning and discuss some of the similarities between this field and formation flying guidance.

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Path Planning for Earth-Orbiting Interferometery

Tahir

Narang-Siddarth

2016

AIAA/AAS Astrodynamics Specialist Conference

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Orbits of geosynchronous satellite constellations for interferometric Earth imaging

Cited by 3 publications

References 1 publication

Adaptive output feedback tracking control of spacecraft formation

Adaptive output feedback tracking control of spacecraft formation

A survey of spacecraft formation flying guidance and control (part 1): guidance

Path Planning for Earth-Orbiting Interferometery

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