Unscented kalman filter for multiple spacecraft formation flying

2004 ◽  
Author(s):  
Lingji Chen ◽  
S. Seereeram ◽  
R.K. Mehra
Keyword(s):  
Kalman Filter ◽  
Formation Flying ◽  
Unscented Kalman Filter ◽  
Spacecraft Formation ◽  
Spacecraft Formation Flying ◽  
Multiple Spacecraft

Adaptive Synchronization Control of Multiple Spacecraft Formation Flying

2006 ◽  
Vol 129 (3) ◽  
pp. 337-342 ◽  
Author(s):  
Hong-Tao Liu ◽  
Jinjun Shan ◽  
Dong Sun
Keyword(s):  
Formation Flying ◽  
Control Technique ◽  
Adaptive Synchronization ◽  
Synchronization Control ◽  
Tracking Errors ◽  
Control Approach ◽  
Synchronization Errors ◽  
Spacecraft Formation ◽  
Spacecraft Formation Flying ◽  
Multiple Spacecraft

An adaptive nonlinear synchronization control approach is developed for multiple spacecraft formation flying with elliptical reference orbits. It can guarantee that both the tracking errors and the synchronization errors of the relative positions converge to zero globally, even in the presence of uncertain parameters. The generalized synchronization concept allows us to design various synchronization errors so that different synchronization performance can be obtained. Simulation results of a leader-follower spacecraft pair and the maneuvering of multiple spacecraft in formation flying are presented to verify the effectiveness of the proposed control technique.

scholarly journals Hardware-in-the-Loop Simulation for Spacecraft Formation Flying

2010 ◽  
Vol 2010 ◽  
pp. 1-13 ◽  
Author(s):  
Jinjun Shan ◽  
Piotr Wenderski
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Logic Controller ◽  
Formation Flying ◽  
Initial Position ◽  
Hardware In The Loop ◽  
Spacecraft Formation ◽  
External Perturbations ◽  
Spacecraft Formation Flying ◽  
Logic Control ◽  
Multiple Spacecraft

This paper presents a hardware-in-the-loop (HITL) simulation approach for multiple spacecraft formation flying. Considering a leader-follower formation flying configuration, a Fuzzy Logic controller is developed first to maintain the desired formation shape under external perturbations and the initial position offsets. Cold-gas on/off thrusters are developed to be introduced to the simulation loop, and the HITL simulations are conducted to validate the effectiveness of the proposed simulation configuration and Fuzzy Logic control.

Orbit Determination of Spacecraft Formation Flying With Slowly Rotating Asteroids

2014 ◽  
Vol 67 (4) ◽  
pp. 687-710 ◽  
Author(s):  
HuiXin Yang ◽  
XiXiang Yang ◽  
WeiHua Zhang
Keyword(s):  
Formation Flying ◽  
Unscented Kalman Filter ◽  
State Variables ◽  
Spacecraft Formation ◽  
Measurement Models ◽  
Filter Performance ◽  
Spacecraft Formation Flying ◽  
Multiple Measurements ◽  
Novel Method

This article proposes a novel method to autonomously determine the relative orbits of a small spacecraft formation flying with a slowly rotating near-Earth asteroid for the asteroid mitigation mission. A combined model of spacecraft-to-asteroid measurements with inter-spacecraft communication is built up. The dynamic model accounting for the perturbations is derived to describe the state variables of the Unscented Kalman Filter (UKF). The Lyapunov function approach is used to design a control law to maintain the orbits of the spacecraft formation. Four navigation scenarios are presented based on the different combinations of multiple measurements: two of them are non-collaborative scenarios which only include the spacecraft-to-asteroid measurements in the measurement models, while the other two are collaborative scenarios with the inter-spacecraft communication added into the measurement models. Simulation results are analysed and compared with each other to show the improvements of the filter performance in the aspects of the convergence speed and the accuracy of the estimator.

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