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1 Typical launch vehicle trajectory [12]

1 Typical launch vehicle trajectory [12]

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Fig. 1.1 LIGO observatory
Fig. 1.3 Orbit design with spacecrafts at the Earth-Moon L3, L4, and L5...
Fig. 1.4 (a) Gravitational waves Spectrum (b) LAGRANGE strain...
Fig. 2.1 IMS and MGRS block diagram, with the alternate LISA-like...
+51 Fig. 2.2 Primary IMS configuration using a diffraction grating as the...
Space Gravitational Wave Observatory Around Earth
Technical Report
Full-text available
  • May 2021
We describe a new space gravitational wave observatory design called LAGRANGE that maintains all important LISA science at about half the cost and with reduced technical risk. It consists of three drag-free spacecraft in the most stable geocentric formation, the Earth-Moon L3, L4, and L5 Lagrange points. After complete description of the payload, t...
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... It is not only the test of the direct experiment of general relativity but also the use of gravitational wave astronomical window to understand astrophysical phenomena. 1,2 Gravitational wave detection has important scientific significance and application ...
Kalman filter-based model predictive control for drag-free satellite under actuator failures and input saturations
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This paper studies the problem of fault-tolerant control for the drag-free satellite subject to actuator failures and input saturations. Particularly, a new Kalman filter-based model predictive control method for the drag-free satellite is proposed. Based on the developed dynamic model and the Kalman filter strategy, a new fault-tolerant design scheme is presented for the challenging situation where the satellite is subject to measurement noise and external disturbance. With the designed controller, the robustness of the system can be guaranteed, and the problem caused by actuator constraints and faults can be solved. Finally, the correctness and effectiveness of the proposed method are verified by numerical simulations.
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