In order to improve the estimation performance of interacting multiple model tracking algorithm for group targets, the expected-mode augmentation variable-structure interacting multiple model (EMA-VSIMM) and the best model augmentation variable-structure interacting multiple model (BMA-VSIMM) tracking algorithms are presented in this paper. First, by using the EMA method, a more proper expected-mode set has been chosen from the basic model set of group targets, which can make the selected tracking models better match up to the true mode. The BMA algorithm uses a fixed parameter model of different structures to constitute a candidate model set and selects a minimum difference model from target state as the present extended model from the set of candidates at real time. Second, in the filtering process of VSIMM, the fusion estimation of extension state is implemented by the scalar coefficients weighting method, where weight coefficient is calculated by the trace of the corresponding covariance matrix of extension state. The performances of the proposed EMA-VSIMM and BMA-VSIMM algorithms are evaluated via simulation of a generic group targets maneuvering tracking problem.
It is important and difficult for anti-missile battle to use the advantage of resource complementarity of multidimensional sensor platform for collaborative detection and trace. In order to improve the efficiency of mission planning of sensor, for the heterogeneity of the observed resources and the phase and dynamics of missions, the paper introduces the concept of task community, analyzes and establishes heterogeneous MAS multi-sensor task planning system and solution mechanism of problems, based on which the paper focuses on establishing multi-sensor task planning sequence generation model based on cycle-event. And the paper proposes an improved particle swarm optimization algorithm. Simulation experiments indicate that the mechanism established in the paper is rational and effective, and is better than the multisensor task planning effect under traditional mode.
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