| 一种正切调频与巴克码复合信号脉压性能分析 |
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| 引用本文： | 李江,武文,易红兵.一种正切调频与巴克码复合信号脉压性能分析[J].船电技术,2006,26(6):60-62. |
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| 作者姓名： | 李江 武文 易红兵 |
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| 作者单位： | 空军雷达学院研究生管理大队,武汉,430019;空军雷达学院基础部,武汉,430019;中船船舶重工集团公司712所,武汉,430064 |
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| 摘 要： | 非线性调频信号和二相编码信号在脉冲压缩雷达中使用较为广泛,分别对其进行分析后推导出一类非线性调频-二相编码复合调制信号的时域表达式,这种信号兼有原两种信号的特点,仿真结果表明,该复合调制信号容易产生和处理,其匹配滤波结果对多普勒频移也不敏感,但由于该信号的特殊性,常规窗函数无法对其旁瓣进行抑制。采用延时线网络加权法抑制其旁瓣,效果十分理想。
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| 关 键 词： | 正切调频 二相码 脉冲压缩 旁瓣抑制 延时线网络加权 |
| 文章编号： | 1003-4862（2006）06-0060-03 |
| 收稿时间： | 2006-09-20 |
| 修稿时间： | 2006年9月20日 |
Analysis of a Kind of Co-Modulated Signal by Tg- Frequency Modulation and Bakerma |
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| Li Jiang,Wu Wen,Yi Hongbin.Analysis of a Kind of Co-Modulated Signal by Tg- Frequency Modulation and Bakerma[J].Marine Electric & Electronic Technology,2006,26(6):60-62. |
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| Authors: | Li Jiang Wu Wen Yi Hongbin |
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| Institution: | 1. Department of Graduate Management, AFRA, Wuhan 430019, China; 2. Department of Basics, ARFA, Wuhan 430019, China; 3. Wuhan Marine Electric Propulsion Research Institute, Wuhan 430064, China. |
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| Abstract: | Nonlinear frequency modulation (NLFM) signal and binary phased code(BC) signal applied widely in pulse compression radar. The domain expression for a class of NLFM-BC co-modulated signal with characteristic of each of these two signals is proposed after analyzing of the two signals. The simulation results show that the signal is not only easy to be produced and processed, but also insensitive to Doppler frequency shift after matched filtering, however, conventional window function is not effective for side-lobe suppression because of its particularity. So delay line weighing net synthesis is employed to restrain side-lobes and the final results are quite ideal. |
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| Keywords: | tangent frequency modulation bi-phased codes pulse compression side-lobe suppression delay line weighing net |
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