Research on aiming methods for small sample size shooting tests of two-dimensional trajectory correction fuse
The longitudinal dispersion of the projectile in shooting tests of two-dimensional trajectory corrections fused with fixed canards is extremely large that it sometimes exceeds the correction ability of the correction fuse actuator. The impact point easily deviates from the target, and thus the corre...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-03-01
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| Series: | Defence Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914723002763 |
| _version_ | 1797237947780562944 |
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| author | Chen Liang Qiang Shen Zilong Deng Hongyun Li Wenyang Pu Lingyun Tian Ziyang Lin |
| author_facet | Chen Liang Qiang Shen Zilong Deng Hongyun Li Wenyang Pu Lingyun Tian Ziyang Lin |
| author_sort | Chen Liang |
| collection | DOAJ |
| description | The longitudinal dispersion of the projectile in shooting tests of two-dimensional trajectory corrections fused with fixed canards is extremely large that it sometimes exceeds the correction ability of the correction fuse actuator. The impact point easily deviates from the target, and thus the correction result cannot be readily evaluated. However, the cost of shooting tests is considerably high to conduct many tests for data collection. To address this issue, this study proposes an aiming method for shooting tests based on small sample size. The proposed method uses the Bootstrap method to expand the test data; repeatedly iterates and corrects the position of the simulated theoretical impact points through an improved compatibility test method; and dynamically adjusts the weight of the prior distribution of simulation results based on Kullback–Leibler divergence, which to some extent avoids the real data being ''submerged'' by the simulation data and achieves the fusion Bayesian estimation of the dispersion center. The experimental results show that when the simulation accuracy is sufficiently high, the proposed method yields a smaller mean-square deviation in estimating the dispersion center and higher shooting accuracy than those of the three comparison methods, which is more conducive to reflecting the effect of the control algorithm and facilitating test personnel to iterate their proposed structures and algorithms.; in addition, this study provides a knowledge base for further comprehensive studies in the future. |
| first_indexed | 2024-04-24T17:27:51Z |
| format | Article |
| id | doaj.art-1dff67874a11427ba3f18f7a1e67bc53 |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-04-24T17:27:51Z |
| publishDate | 2024-03-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-1dff67874a11427ba3f18f7a1e67bc532024-03-28T06:38:01ZengKeAi Communications Co., Ltd.Defence Technology2214-91472024-03-0133506517Research on aiming methods for small sample size shooting tests of two-dimensional trajectory correction fuseChen Liang0Qiang Shen1Zilong Deng2Hongyun Li3Wenyang Pu4Lingyun Tian5Ziyang Lin6School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaCorresponding author.; School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaThe longitudinal dispersion of the projectile in shooting tests of two-dimensional trajectory corrections fused with fixed canards is extremely large that it sometimes exceeds the correction ability of the correction fuse actuator. The impact point easily deviates from the target, and thus the correction result cannot be readily evaluated. However, the cost of shooting tests is considerably high to conduct many tests for data collection. To address this issue, this study proposes an aiming method for shooting tests based on small sample size. The proposed method uses the Bootstrap method to expand the test data; repeatedly iterates and corrects the position of the simulated theoretical impact points through an improved compatibility test method; and dynamically adjusts the weight of the prior distribution of simulation results based on Kullback–Leibler divergence, which to some extent avoids the real data being ''submerged'' by the simulation data and achieves the fusion Bayesian estimation of the dispersion center. The experimental results show that when the simulation accuracy is sufficiently high, the proposed method yields a smaller mean-square deviation in estimating the dispersion center and higher shooting accuracy than those of the three comparison methods, which is more conducive to reflecting the effect of the control algorithm and facilitating test personnel to iterate their proposed structures and algorithms.; in addition, this study provides a knowledge base for further comprehensive studies in the future.http://www.sciencedirect.com/science/article/pii/S2214914723002763Two-dimensional trajectory correction fuseSmall sample size testCompatibility testKL divergenceFusion bayesian estimation |
| spellingShingle | Chen Liang Qiang Shen Zilong Deng Hongyun Li Wenyang Pu Lingyun Tian Ziyang Lin Research on aiming methods for small sample size shooting tests of two-dimensional trajectory correction fuse Defence Technology Two-dimensional trajectory correction fuse Small sample size test Compatibility test KL divergence Fusion bayesian estimation |
| title | Research on aiming methods for small sample size shooting tests of two-dimensional trajectory correction fuse |
| title_full | Research on aiming methods for small sample size shooting tests of two-dimensional trajectory correction fuse |
| title_fullStr | Research on aiming methods for small sample size shooting tests of two-dimensional trajectory correction fuse |
| title_full_unstemmed | Research on aiming methods for small sample size shooting tests of two-dimensional trajectory correction fuse |
| title_short | Research on aiming methods for small sample size shooting tests of two-dimensional trajectory correction fuse |
| title_sort | research on aiming methods for small sample size shooting tests of two dimensional trajectory correction fuse |
| topic | Two-dimensional trajectory correction fuse Small sample size test Compatibility test KL divergence Fusion bayesian estimation |
| url | http://www.sciencedirect.com/science/article/pii/S2214914723002763 |
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