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An orbit state prediction framework is developed with the combination of unscented Kalman filter (UKF) and quantum particle swarm optimization (QPSO). The accurate state prediction decides the performance of spacecraft guidance, navigation and control. Because of the nonlinearity of the state and measurement equation, UKF is gradually applied to nonlinear state estimation and prediction, especially...
In wireless sensor networks, locating a source from its emissions has gained considerable interest over the past few years. In this paper, an enhanced constrained total least squares estimator is proposed for the localization problem under an additive measurement error model. Compared with CTLS algorithm, our method takes not only linear term of TDOA measurement noise but also quadratic term which...
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