海上动目标身份置信度融合计算模型

doi:10.12305/j.issn.1001-506X.2023.04.16

Abstract

Abstract:

In order to support the real-time attack decision of moving targets at sea, dynamic evolution and fusion framework of moving target identity confidence based on D-S (Dempster-Shafer) evidence theory is proposed. A multi-source fusion calculation model of sea moving target identity confidence is constructed to realize the continuous and reliable evaluation of target identity confidence. To cope with the multi-source asynchronous information of moving targets, the target identification space is established, in which the basic probability distribution function of historical and current target information is constructed and used to characterize the increasing uncertainty of historical information as evidence deduced over time. In addition, the target identity fusion confidence is calculated by using the historical and current binary evidence synthesis rules. Simulation results show that the proposed method can improve the target identity confidence, reduce the uncertainty of target recognition in information fusion system, expand the target attack window, and improve the reliability of decision-making and the flexibility of attack.

Key words: information fusion, multi-source asynchronous information, moving target, Dempster-Shafer (D-S) evidence theory, identity confidence

CLC Number:

N945.25

Wenjuan REN, Zhanpeng YANG, Guangluan XU, Kun FU. Fusion calculation model of sea moving target identity confidence[J]. Systems Engineering and Electronics, 2023, 45(4): 1082-1089.

Figures/Tables 9

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mass函数	2^Θ
mass函数	Ø	{ID_A}	{$^\rightharpoondown$ID_A}	u
m_now	0	p_k	1-p_k	0
m_his	0	f(P_k－1, t_k)	g(1－P_k－1, t_k)	1－f(P_k－1, t_k)－g(1－P_k－1, t_k)
m	0	P_k	1-P_k	0

mass函数	2^Θ
mass函数	Ø	{ID_A}	{$^\rightharpoondown$ID_A}	u
m_now	0	p_k	1-p_k	0
m_his	0	P_k－1e^{-λ₁(t_k-t_k-1)}	(1-P_k-1)·e^{-λ₂(t_k-t_k-1)}	1－P_k－1·e^{-λ₁(t_k-t_k-1)}- (1－P_k－1)· e^{-λ₂(t_k-t_k-1)}
m	0	P_k	1-P_k	0

探测手段	原始置信度	跟踪时长/s	数据更新间隔/s	数据条数
地基雷达	0.6	900	20	46
地球同步轨道成像卫星	0.5	1 800	60	31
中低轨电子侦察卫星	0.7	-	-	2
低轨高分辨率成像卫星	0.9	-	-	1

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Fusion calculation model of sea moving target identity confidence

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