通信学报 ›› 2019, Vol. 40 ›› Issue (8): 102-113.doi: 10.11959/j.issn.1000-436x.2019098
修回日期:
2019-05-25
出版日期:
2019-08-25
发布日期:
2019-08-30
作者简介:
裴家正(1994- ),男,河南郑州人,海军航空大学博士生,主要研究方向为检测前跟踪。|黄勇(1979- ),男,湖南汨罗人,博士,海军航空大学副教授,主要研究方向为雷达信号处理。|董云龙(1974- ),男,天津人,海军航空大学副研究员,主要研究方向为雷达组网、多传感器信息融合。|陈小龙(1985- ),男,山东烟台人,博士,海军航空大学副教授,主要研究向为智能雷达信号处理、动目标检测、杂波抑制等。
基金资助:
Jiazheng PEI,Yong HUANG(),Yunlong DONG,Xiaolong CHEN
Revised:
2019-05-25
Online:
2019-08-25
Published:
2019-08-30
Supported by:
摘要:
针对在雷达观测下机动弱小目标的检测前跟踪(TBD)问题中,基于序贯蒙特卡洛的势均衡多伯努利检测前跟踪(SMC-CBMeMBer-TBD)算法存在目标的数目估计不准确及状态估计精度随时间下降的问题,提出了一种基于SMC-CBMeMBer前向后向平滑检测前跟踪的改进算法。该算法在预测和更新过程之间加入多目标粒子群优化算法(MOPSO),基于观测值设置适应度目标函数,使粒子集群向后验概率密度较为集中的位置分布,缓解了粒子贫乏的问题;在更新步骤之后加入平滑递归方法,利用观测值平滑滤波值,算法运算时间虽有一定延长,但获得了数目和状态估计精度的提升。仿真实验表明,与CBMeMBer-TBD方法相比,所提算法在对机动目标数目估计和目标状态估计的准确度等性能上都有所改进。
中图分类号:
裴家正,黄勇,董云龙,陈小龙. 改进的SMC-CBMeMBer前向后向平滑检测前跟踪算法[J]. 通信学报, 2019, 40(8): 102-113.
Jiazheng PEI,Yong HUANG,Yunlong DONG,Xiaolong CHEN. Improved SMC cardinality-balanced multi-Bernoulli forwardbackward smoothing track-before-detect algorithm[J]. Journal on Communications, 2019, 40(8): 102-113.
表2
3种算法在不同信噪比和检测概率下的标准差与OSPA误差均值"
信噪比 | 算法 | 标准差均值 | OSPA均值/m | |||||
PD=0.98 | PD=0.95 | PD=0.90 | PD=0.98 | PD=0.95 | PD=0.90 | |||
CB-TBD | 3.03 | 4.22 | 6.29 | 65.10 | 73.43 | 78.28 | ||
9 dB | SCB-TBD | 2.68 | 3.25 | 4.36 | 62.98 | 66.71 | 71.40 | |
PSCB-TBD | 2.22 | 2.79 | 3.33 | 59.77 | 60.82 | 62.95 | ||
CB-TBD | 3.11 | 4.47 | 6.74 | 66.25 | 76.44 | 79.20 | ||
7 dB | SCB-TBD | 2.71 | 3.45 | 4.70 | 63.64 | 69.59 | 73.80 | |
PSCB-TBD | 2.31 | 2.92 | 3.65 | 59.89 | 65.68 | 66.39 | ||
CB-TBD | 4.01 | 5.24 | 6.87 | 73.08 | 81.69 | 84.76 | ||
5 dB | SCB-TBD | 3.09 | 3.66 | 5.37 | 69.40 | 73.86 | 77.20 | |
PSCB-TBD | 2.82 | 3.09 | 3.87 | 67.76 | 70.65 | 74.56 |
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