帶反饋信息的分布多傳感器航跡融合算法
DISTRIBUTED MULTISENSOR TRACK FUSION WITH FEEDBACK INFORMATION
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摘要: 為了改善傳感器級的跟蹤性能,本文研究帶反饋信息的多傳感器狀態(tài)估計技術.在給出有、無反饋信息情況下的局部節(jié)點狀態(tài)估計解的基礎上,該文提出多坐標系中有、無反饋信息情況下的航跡融合方程,并指出有、無反饋信息情況下的兩種融合解是等價的、最優(yōu)的。仿真結果表明,在分布式多傳感器信息融合系統(tǒng)中引入反饋機制可以明顯改善局部節(jié)點估計精度,其性能已接近融合中心.在集中和雷達反隱身系統(tǒng)中,就空間重疊、覆蓋而論,融合系統(tǒng)局部節(jié)點一般選2至4個為宜.Abstract: In order to improve the tracking performance of local sensors in distributed multisensor data fusion systems,this paper discusses the state estimation technique of multisensor tracking with feedback information.Based on the single sensor Kalman filtering equations and distributed estimation solutions with feedback information,this paper presents the track fusion equations with and without feedback information in multicoordinate systems,and proves that two kinds of track fusion solutions are optimal and equivalent in the form of the theorem.The simulation results show that the multisensor data fusion system can not only increase the global estimation accuracy of target but also greatly improve the tracking performance of local nodes by using the feedback information.With respect to multiradar integration tracking,it is suitable for using 2~4 local sensors in data fusion system.
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