相关实验视频
Updated: May 14, 2025
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Research and Development of High-performance Explosives
Published on: February 20, 2016
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基于二维关节延伸特征的高空爆发烟准确的高度测量方法
Liwen Pan1, Yao Zhang1, Qianyu Wang1
1School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China.
Sensors (Basel, Switzerland)
|April 12, 2025
概括
这项研究引入了一种新的2D联合高度测量方法,用于高空空气爆烟,通过改进的CFAR检测和特征提取来提高精度. 该方法即使在信号噪声比较低的条件下,也能实现可靠的距离测量.
科学领域:
- 航空航天工程 航空航天工程
- 信号处理 信号处理
- 防务技术 防务技术 技术
背景情况:
- 精确的高度测量对于高空空气爆烟至关重要.
- 传统方法在准确性和低信号噪声比 (SNR) 条件下面临挑战.
- 在恒定虚假报警率 (CFAR) 检测极限性能中的掩盖效应.
研究的目的:
- 提出一个二维 (2D) 关节延伸特征的高度测量方法.
- 为了提高高空气爆烟的高度计的准确性和稳定性.
- 在低SNR下解决传统高度测量的局限性.
主要方法:
- 改进了CFAR检测和二级保护窗口,以减轻掩盖效应.
- 利用几何关系来测量烟到地面的距离.
- 整合多普勒维度扩展特征与2D联合高度测量的基于范围的方法.
- 使用特征区域提取方法来改进冲击角度.
主要成果:
- 拟议的2D联合高度测量算法为在70-100米爆破高度运行的烟提供了准确和可靠的距离测量.
- 在 -10 dB SNR 下,根平均平方误差 (RMSE) 是 < 2.38 m (3% 的误差率).
- 在 -15 dB SNR 下,RMSE 保持在 < 4.76 m (≤5% 误差率),表明低 SNR 的稳定性.
结论:
- 开发的2D联合高度测量方法显著提高了高空空气爆烟的精度.
- 这种方法有效地克服了低信号噪声比率带来的挑战.
- 精细的特征提取和改进的CFAR检测有助于卓越的高度测量性能.
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