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一种改进的匹配干涉场被动定位方法
An improved matching interference field method for passive localization
- DOI:
- 作者:
- 肖海瀚1, 高源1,2, 周胜增1,2XIAO Hai-han1, GAO Yuan1,2, ZHOU Sheng-zeng1,2
- 作者单位:
- 1. 上海船舶电子设备研究所, 上海 201108;
2. 水声对抗技术重点实验室, 上海 201108
1. Shanghai Marine Electronic Equipment Research Institute, Shanghai 201108, China;
2. Science and Technology on Underwater Acoustic Antagonizing Laboratory, Shanghai 201108, China
- 关键词:
- 匹配干涉场;Radon变换;图像处理;被动定位
matching interference field; radon transform; image processing; passive localization
- 摘要:
- 匹配干涉场被动定位方法具有较好的宽容性，对声场参数建模误差要求较低，但当声场失配程度较高，或目标信号信噪比较低时，基于干涉场结构匹配的相关峰值不明显，使得匹配性能降低。因此，在原始的匹配干涉场的基础上提出了一种基于Radon变换的改进方法，利用Radon变换对拷贝声场的干涉结构和实际声场的精细干涉结构进行图像处理后再对其作相关处理。仿真和实验数据表明，经此改进后，即使是在建模声场存在一定失配的条件下，在匹配相关峰值提高的同时，旁瓣也能得到有效抑制，能够有效地改进匹配干涉场的被动定位效果。
The original matching interference field method for passive localization has a good tolerance for sound field modeling errors. However, in case of serious sound field mismatch, or low signal-to-noise ratio target, the correlation peak based on interference field structure matching is not obvious, which makes the matching effect decreased Therefore, based on the original matching interference field, an improved method is proposed by using Radon transform to perform the image processing of the fine interference structures of the actual and calculated interference sound fields and the subsequent correlation processing. Simulation and experimental data show that after this improvement, even in case of some sound field mismatch, the matching correlation peak value is increased and the side lobes are effectively suppressed, thus the passive localization effect of the matching interference field can be effectively improved.
2023,45(6): 140-145 收稿日期：2022-06-01
DOI：10.3404/j.issn.1672-7649.2023.06.026
分类号：TB566
作者简介：肖海瀚(1996-)，男，硕士研究生，研究方向为水声信号与信息处理
