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This paper improves on a noted square-root RTS Kalman smoothing algorithm proposed by Park and Kailath for the application purpose. This improved square-root RTS algorithm is able to additionally accommodate arbitrary exogenous known input, as such case is quite common in the real-world applications. In addition, hyperbolic Householder transformations are employed to avoid the computation of the difference...
In the data grid environment, when users access to files, how to select the best site to obtain files from multiple replicas and reach the highest QOS (quality of service) in the cost of same price is a problem that need to be studied urgently, that is replica selection. In this paper, it proposes a new combination algorithm based on genetic algorithm and ant algorithm, which not only solves the inefficient...
Most blind source separation (BSS) algorithms deal with cases in which the number of sources is assumed known. This paper proposes a robust on-line blind separation algorithm with unknown and dynamic number of sources. Based on existing over-determined (more sensors than sources) architecture, after estimating the source number using SVD, we add the momentum term to improve the classical Cichocki-Unbenauen...
In this paper, the vector delay lock loop/frequency lock loop (VDLL and VFLL) tracking algorithm for tracking the L1 civilian GPS signal is analyzed and simulated. In vector mode, the navigation processor controls the code and carrier numerically controls oscillators (NCOs) replacing the tracking loops. A major advantage of this method is that after once a good position, velocity and time (PVT) solution...
Aiming at the phenomenon of premature convergence and later period oscillatory occurrences, an adaptive particle swarm optimization algorithm with the changes of the population diversity was proposed. In the algorithm, the adaptive exponent decreasing inertia weight and a dynamic adaptive changing threshold were proposed, the satisfied particle of threshold will be mutation by the average distance...
VMI (vendor managed inventory) policy coordinates effectively the antinomy between the inventory and the transportation within logistics distribution system. Under VMI mode, integrating inventory and transportation of the supplier and the demander as a whole is considered to achieve the optimization of total distribution cost. In view of typical one-warehouse multiretailer distribution network in...
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