Ship collision risk calculation method considering uncertainty of ship position prediction

Table 1. Influence of parameters variation
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Table 1. Influence of parameters variation
参数变化碰撞危险变化
$K$ 增大增大
$T$ 减小增大
$\delta $ 增大增大

Table 2. Table of correspondence between confidence level and ellipse's major-minor axis

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Table 2. Table of correspondence between confidence level and ellipse's major-minor axis

置信系数 $\gamma $/%	$\varepsilon $	长半轴	短半轴
99	9.21	$3.03{\sigma _1}$	$3.03{\sigma _2}$
90	4.60	$2.14{\sigma _1}$	$2.14{\sigma _2}$
70	2.41	$1.55{\sigma _1}$	$1.55{\sigma _2}$
50	1.39	$1.18{\sigma _1}$	$1.18{\sigma _2}$
30	0.71	$0.84{\sigma _1}$	$0.84{\sigma _2}$
10	0.21	$0.46{\sigma _1}$	$0.46{\sigma _2}$

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Shaobo WANG, Yingjun ZHANG, Xin HU. Ship collision risk calculation method considering uncertainty of ship position prediction[J]. Chinese Journal of Ship Research, 2021, 16(1): 114

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