多普勒盲区条件下空地预警雷达多目标协同跟踪方法

发布时间：2018-06-02 01:55

本文选题：协同跟踪 + 多普勒盲区　；参考：《红外与激光工程》2014年07期

【摘要】：针对多普勒盲区条件下预警机雷达多目标跟踪问题,基于交互式多模型(IMM,Interacting Multiple Models)、联合概率数据互联(JPDA,Joint Probability Data Association)和分布式不敏卡尔曼滤波(UKF,Unscented Kalman Filter)提出了预警机雷达与地基雷达对目标进行协同跟踪的方法。该方法利用目标的状态估计和预测实时计算每部雷达的动态融合权值,预测目标的多普勒频率。当预警机雷达对目标的量测不存在且检测到目标进入预警机雷达多普勒盲区时,由预警机雷达对目标状态进行外推,以此产生虚拟量测,用虚拟量测与地基雷达协同跟踪对目标的融合估计状态进行更新;若预警机雷达对目标的量测不存在且目标不是进入多普勒盲区时,由地基雷达单独对目标的融合估计状态进行更新。当目标飞出预警机雷达多普勒盲区后,将预警机雷达对目标的状态估计再次与地基雷达进行关联,并根据动态权值融合更新目标状态。仿真结果表明,该方法能够改善多普勒盲区内多目标航迹的连续性和跟踪精度。
[Abstract]:Aiming at the multi-target tracking problem of AWACS radar under the condition of Doppler blind area, Based on interactive multi-model interacting Multiple models, joint probabilistic data interconnection (JPA) Joint Probability Data Association) and distributed Unscented Kalman filter (DKF), an AWACS radar and ground-based radar are proposed for collaborative tracking of targets. In this method, the dynamic fusion weights of each radar are calculated in real time using the state estimation and prediction of the target, and the Doppler frequency of the target is predicted. When the measurement of the target by AWACS does not exist and the target enters the Doppler blind area of AWACS, the state of the target is extrapolated by the AWACS radar to generate virtual measurement. The fusion estimation state of the target is updated with virtual measurement and ground-based radar tracking, if the measurement of the target by AWACS does not exist and the target does not enter the Doppler blind area, The fusion estimation state of the target is updated separately by the ground-based radar. When the target flies out of the Doppler blind area of AWACS radar, the state estimation of AWACS radar is associated with the ground-based radar again, and the target state is updated according to the fusion of dynamic weights. Simulation results show that the method can improve the continuity and tracking accuracy of multi-target tracks in the Doppler blind area.
【作者单位】：空军预警学院;中国人民解放军95333部队;北京无线电测量研究所;
【基金】：武器装备军内科研项目(2011195)
【分类号】：TN953

【参考文献】