基于LSTM与1DCNN的导弹轨迹预测方法

doi:10.12305/j.issn.1001-506X.2023.02.22

Abstract

Abstract:

Aiming at the problem that it is difficult to predict the trajectory of ultra-long-range attack targets such as ballistic missiles, a target trajectory prediction method based on long short-term memory (LSTM)network and 1-dimensional convolutional neural network (1DCNN) is proposed. Firstly, a three-degree-of-freedom missile movement model is established, and three target trajectory data are designed according to the type of reentry, and a maneuvering database is constructed to solve the problem of the source of trajectory data. Secondly, the method of repeated segmentation and sliding window is used to preprocess the trajectory data. Then, a target type classification network is designed based on LSTM and 1DCNN to perform preliminary classification of targets. Finally, a trajectory prediction network is designed based on 1DCNN to predict the target trajectory. The simulation results show that the proposed trajectory prediction network can complete the trajectory prediction task, and the prediction error is within a reasonable range.

Key words: ballistic missile, target classification, trajectory prediction, long short-term memory (LSTM) network, 1-dimensional convolutional neural network(1DCNN)

CLC Number:

V448.15

Botao SONG, Guangliang XU. Missile trajectory prediction method based on LSTM and 1DCNN[J]. Systems Engineering and Electronics, 2023, 45(2): 504-512.

Figures/Tables 17

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层定义	层参数	层输出尺寸
LSTM层1	神经元数量32	(30, 32)
LSTM层2	神经元数量32	(30, 32)
1DCNN层1	卷积核数量64, 长度4	(27, 64)
1DCNN层2	卷积核数量128, 长度4	(26, 128)
最大池化层	核大小为4	(6, 128)
展开层	无	(768, 1)
全连接层	神经元数量3	(3, 1)

网络	训练集精度	测试集精度
1DCNN	72.4	71.8
LSTM	77.7	76.4
LSTM-1DCNN	86.0	84.8

层定义	层参数	层输出尺寸
1DCNN层1	卷积核数量32, 长度2	(29, 32)
最大池化层	核大小为2	(14, 32)
1DCNN层2	卷积核数量32, 长度2	(13, 32)
1DCNN层3	卷积核数量32, 长度2	(12, 32)
最大池化层	核大小为2	(6, 32)
展开层	无	(192, 1)
全连接层	神经元数量64	(64, 1)
全连接层	神经元数量32	(32, 1)
全连接层	神经元数量120	(120, 1)

目标类型	预测时长
目标类型	60 s	90 s	120 s
弹道式	569.3	1 591.5	2 016.5
半弹道式	417.5	3 137.7	3 153.1
升力式	457.2	1 047.4	1 576.7

目标类型	预测120 s误差
弹道式	2 635.7
半弹道式	3 860.1
升力式	2 079.8

Missile trajectory prediction method based on LSTM and 1DCNN

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网络类型	预测误差/m	训练用时(周期)/个
BP	9005.6	1.0
RNN	4236.1	2.5
LSTM	2240.6	3.0
LSTM-1DCNN	2043.6	2.8
1DCNN	2079.8	2.0

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