| 邹彬彬,陈晶晶,荆成财,王润田.谱修正技术在脉冲压缩信号检测中的应用[J].声学技术,2014,33(3):275~279 |
| 谱修正技术在脉冲压缩信号检测中的应用 |
| Application of pulse compression technique in underwater acoustic detection |
| 投稿时间：2013-01-28 修订日期：2013-05-02 |
| DOI：10.3969/j.issn1000-3630.2014.03.018 |
| 中文关键词: 脉冲压缩 抑制旁瓣 窗函数加权 谱修正技术 |
| 英文关键词: pulse compression sidelobe suppression signal spectrum modification |
| 基金项目:上海市科委“科技创新行动计划”资助项目（12231203800） |
|
| 摘要点击次数: 1431 |
| 全文下载次数: 1674 |
| 中文摘要: |
| 脉冲压缩是信号检测的一个重要技术，在多目标水声环境下，为避免强目标脉冲压缩输出的旁瓣掩埋弱目标的主瓣，引入窗函数加权技术来抑制旁瓣，提高对目标的空间分辨率。同时考虑到实验中声呐系统的带宽和时宽受限制，对于小时宽带宽积的脉冲压缩信号，引入谱修正技术，进一步提高主旁瓣比。利用Matlab给出理论仿真结果，并通过实验验证该技术在噪声背景下对观测小目标的实用性。 |
| 英文摘要: |
| In order to solve the contradiction between operation distance and range resolution of the sonar, the principle of pulse compression is analyzed. The sidelobe suppression of linear frequency modulation signal (LFM) is introduced to avoid target omission. Considering the small product of timewidth and bandwidth of sonar system, the technique of modification to signal spectrum is adopted.The suggested algorithm is simulated by MATLAB and realized based on ADSP-BF506F in our experiment. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
