线性调频脉冲串信号及其检测性能分析

岳 雷

doi:10.11993/j.issn.1673-1948.2015.04.007

线性调频脉冲串信号及其检测性能分析

doi: 10.11993/j.issn.1673-1948.2015.04.007

岳雷^1,2

1.
昆明船舶设备研究试验中心, 云南昆明, 650000
2.
西北工业大学航海学院, 陕西西安, 710072

详细信息

作者简介:
岳雷(1988-), 男, 硕士, 主要研究方向为信号与信息处理.

中图分类号: TJ630.34; TN911.7
计量
- 文章访问数: 1196
- HTML全文浏览量: 2
- PDF下载量: 559
- 被引次数: 0
出版历程
- 收稿日期: 2015-05-13
- 修回日期: 2015-06-10
- 刊出日期: 2015-08-20

Pulse Trains of Linear Frequency-modulated Signal and Its Detection Performance

YUE Lei^1,2

1.
Kunming Shipbuilding Equipment Research & Test Center, Kunming 650000, China
2.
School of Marine Science and Technology, Northwestern Polytechnical University, Xi′an 710072, China

摘要

摘要: 针对主动声呐的混响抑制问题, 研究了线性调频脉冲串(PTLFM)信号的时域频谱特性及模糊度函数特性, 提出了采取宽带对称三角状调频形式PTLFM信号提高速度副瓣处的混响抑制性能的方法, 根据梳状谱信号设计要求完成了PTLFM波形设计及PTLFM实测数据在复杂背景下不同运动速度的目标检测。理论分析、仿真结果及实测数据处理结果表明: 对于静止或运动目标来说, 锯齿状调频形式PTLFM信号的混响抑制性能优于对称三角状调频形式PTLFM信号; 对于运动速度为其模糊度函数速度副瓣最大值的目标来说, 对称三角状调频形式PTLFM信号混响抑制性能更强。本文的研究可以为抗混响波形设计提供参考。
- 线性调频脉冲串(PTLFM) /
- 模糊度函数 /
- 混响抑制 /
- 波形设计 /
- 速度副瓣
Abstract: For active sonar reverberation suppression, the characteristics of pulse trains of linear frequency-modulated (PTLFM)signal is studied in terms of time domain, frequency domain, and ambiguity function, and the wideband symmetrical triangular frequency-modulated PTLFM signal is adopted to improve the reverberation suppression performance on speed sidelobe. PTLFM waveform design is completed following the comb spectrum signal design requirements, and detection of target with different velocity is performed by making use of measured data of PTLFM signal with complicated background. Theoretical analysis, simulation results and measured data show that the reverberation suppression performance of the sawtooth PTLFM signal is better than that of the symmetrical triangular PTLFM signal for static or moving target, while the reverberation suppression performance of the symmetrical triangular PTLFM signal is better for the target whose velocity is the maximum speed sidelobe of its ambiguity function. This study may provide a reference for anti-reverberation waveform design.
- pulse trains of linear frequency-modulated(PTLFM) /
- ambiguity function /
- reverberation suppression /
- waveform design /
- speed sidelobe

HTML全文

参考文献(9)

[1]	Pecknold S P, Renaud W M, McGaughey D R, et al. Im-proved Active Sonar Performance Using Costas Wave-Forms[J]. IEEE Journal of Oceanic Engineering, 2009, 34(4): 559-574.
[2]	Collins T, Atkins P. Doppler-sensitive Active Sonar Pulse Designs for Reverberation Processing[J]. IEEE Processing Radar, Sonar Navig , 1998 , 145(6): 347-353.
[3]	Doisy Y, Deruaz L. Reverberation Suppression Using Wideband Doppler-Sensitive Pulses[J]. IEEE Journal of Oceanic Engineering, 2008, 33(4): 419-433.
[4]	Mathieu E, Colin G D, Beerens P S. False-Alarm Reduc-tion for Low-Frequency Active Sonar With BPSK Pulses: Experimental Results[J]. IEEE Journal of Oceanic Engineering, 2011, 36(1): 53-60.
[5]	张容权, 杨建宇, 熊金涛, 等. 对称三角线性调频连续波信号模糊函数分析[J]. 电子学报, 2004, 32(3): 353-356. Zhang Rong-quan, Yang Jian-yu, Xiong Jin-tao, et al. Symmetrical Triangular Linear Frequency Modulation Continuous Wave Signal Fuzzy Function Analysis[J]. Chinese of Journal Electronics, 2004, 32(3): 353-356.
[6]	Lin Z B. Wideband Ambiguity Funcfibn of Broadband Signals[J]. Journal of the Acoustical Society of America, 1988, 83(6): 2108-2116.
[7]	梁国龙, 张瑶, 付进, 等. 新型主动声呐梳状谱信号设计[J]. 哈尔滨工程大学学报, 2012, 33(3): 302-307. Liang Guo-long, Zhang Yao, Fu Jin, et al. New Comb Waveforms for Reverberation Suppression[J]. Journal of Harbin Engineering University, 2012, 33(3): 302-307.
[8]	姚东明, 蔡志明. 主动声纳梳状谱信号研究[J]. 信号处理, 2006, 22(2): 256-259. Yao Dong-ming, Cai Zhi-ming. Active Sonar Comb Spec-trum of Signal[J]. Signal Processing, 2006, 22(2): 256- 259.
[9]	岳雷, 梁红, 杨长生. 一种宽带脉冲串信号模糊度函数实现方法[J]. 鱼雷技术, 2014, 22(2): 96-99. Yue Lei, Liang Hong, Yang Chang-sheng. A Realization Method for Ambiguity Function of Wideband Pulse Train Signal[J]. Torpedo Technology, 2014, 22(2): 96-99.