Romulus: Along Track Formation of Radar Satellites for MTI (Moving Target Identification) and High SAR Performance

Aguttes, J.P.; Attia, S.; Amiot, Thierry; Vaizan, Bernard; Desjonqueres, J. D.; Chrétien, Jean-Pierre; Tison, C.; Ovarlez, Jean‐Philippe

doi:10.1109/igarss.2006.984

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…which enforces the result, already visible on the set of differential equations (1), that the across-track relative motion is decoupled from the in-plane relative motion. Equation 2shows the modes with twice a pair of complex conjugate modes at the orbital frequency n and one double integrator.…”

Section: A Equations Of Motionsupporting

confidence: 68%

“…An example of such a mission is the ROMULUS project (whose French acronym means something like Orbital Multisatellite Radars dedicated to Monitoring): in this in-house Onera project aiming at multidisciplinary team work on formation flying radar antennas, the initial mission chosen has been GMTI (Ground Motion Target Indicator) provided by STAP algorithm (Space Time Adaptive Processing) [1].…”

Section: Introductionmentioning

confidence: 99%

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Structured control for a satellites platoon formation in low Earth orbit using Youla-parametrization

Demourant

Chrétien

2009

2009 European Control Conference (ECC)

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The paper presents the design and analysis of a control strategy appropriate in the case of two or more spacecrafts in low Earth orbit and in close along-track configuration. The well known dynamics of the relative motion are briefly recalled and their decoupling properties allow to restrict the multivariable control design to an in-plane problem. An H∞ synthesis is used to obtain a control law for a formation of two satellites. The control of a formation of four satellites, in the case of local measurements between each satellite and the preceding one, falls in the framework of structured control. A Youla-parameter based technique (convex synthesis) allows to use convex optimization to improve the initial blockdiagonal structure derived from the two-satellites controllers, with a great flexibility to take into account frequency and time constraints.

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Section: A Equations Of Motionsupporting

confidence: 68%

Section: Introductionmentioning

confidence: 99%