| 引用本文: | 唐波,谭思炜,张静远.水下声探测系统载体振动干扰分析及抑制方法.[J].国防科技大学学报,2022,44(6):89-94.[点击复制] |
| TANG Bo,TAN Siwei,ZHANG Jingyuan.Vibration interference analysis of underwater acoustic detection system and its suppressing method[J].Journal of National University of Defense Technology,2022,44(6):89-94[点击复制] |
|
| |
|
|
| 本文已被：浏览 4321次 下载 3529次 |
| 水下声探测系统载体振动干扰分析及抑制方法 |
| 唐波,谭思炜,张静远 |
|
(海军工程大学 兵器工程学院, 湖北 武汉 430033)
|
| 摘要: |
| 针对水下探测系统载体振动对目标回波信号的微多普勒特征谱产生干扰的问题,从干扰产生的基本原理出发,推导了干扰的近似乘性表达式。在获取振动干扰数据的条件下,提出了针对乘性干扰的干扰抑制算法,并针对推导干扰乘性表达式时的近似条件,分析了近似算法带来的误差。仿真结果表明,该方法可有效抑制水下探测系统平台振动对目标回波信号的微多普勒特征谱产生的干扰,并且在绝大多数情况下,由算法带来的误差可以忽略不计。 |
| 关键词: 微多普勒 振动干扰 干扰抑制 水声探测 乘性干扰 |
| DOI：10.11887/j.cn.202206011 |
| 投稿日期：2021-01-14 |
| 基金项目:国家自然科学基金资助项目(41976177) |
|
| Vibration interference analysis of underwater acoustic detection system and its suppressing method |
| TANG Bo, TAN Siwei, ZHANG Jingyuan |
|
(College of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China)
|
| Abstract: |
| Aiming at the problem that the carrier vibration of underwater detection system interferes with the micro-Doppler spectrum of target echo signal, the approximate multiplicative expression of interference was derived from the basic principle of interference generation. With obtaining vibration interference data, an interference suppression algorithm for multiplicative interference was proposed. Meanwhile, the error caused by the approximate algorithm was analyzed according to the approximate conditions when the multiplicative expression of interference was derived. Simulation results show that the proposed method can effectively suppress the interference which is derived from vibration of underwater acoustic detection system and imposed on the micro-Doppler spectrum, and the algorithm error can be ignored generally. |
| Keywords: micro Doppler vibration interference interference suppression acoustic detection multiplicative interference |
|
|
|
|
|
