Target Acquisition Probability of an Airborne Strapdown Missile at Hand-over Point

doi:10.12382/bgxb.2024.0495

Abstract

Abstract:

The acquisition of a ground-moving target at the terminal guidance hand-over point in the scenario of an airborne strapdown missile attacking the target is investigated.The influences of three key factors,including missile position dispersion,attitude dispersion,and target dispersion,on the acquisition probability of infrared seeker are studied.Then the analytical expression for the mean square error of line-of-sight angle is derived based on functional error analysis.Furthermore,an analytical model of acquisition probability under two attack modes,namely current point and pre-point,is established.Simulated results verify the model’s accuracy,which enables determining the range of moving velocity of target that can be engaged.

Key words: airborne strapdown missile, functional analysis of variance, acquisition probability, analytical model, maneuvering target

WU Jiayang, YANG Huabo, BAI Xibin, ZHANG Shifeng. Target Acquisition Probability of an Airborne Strapdown Missile at Hand-over Point[J]. Acta Armamentarii, 2025, 46(6): 240495-.

Figures/Tables 7

Fig.1 Schematic diagram of seeker acquisition zone

Fig.2 Target dispersion graph under pre-point attack mode

Fig.3 Dispersion ellipsoid of seeker activation points

Table 1 Dispersion standard deviations of seeker activation points

变量	统计结果	拟合结果	相对误差/%
σ_x₀/m	25.44	25.75	1.2
σ_y₀/m	4.81	4.47	7.6
σ_z₀/m	1.58	1.46	8.2
σ_φ/(°)	0.0530	0.0613	13.5
σ_ψ/(°)	0.0526	0.0498	5.6
σ_ε/(°)	0.8900	1.0650	16.4

Table 2 State parameter setting of the moving target

参数名称	数值
初始位置T₀/m	[2500,0,0]
航向角H_t/(°)	180
距离均方差σ_D/m	20
方位均方差σ_B/(°)	0.5
航向均方差σ_H/(°)	2
速度均方差σ_v/(m·s^-1)	2.5

Fig.4 Mean square error of line-of-sight angles for different target speeds under pre-point attack mode

Fig.5 Mean square error of line-of-sight angles for different target speeds under current point attack mode

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