| 基于平方变换原理的伪码引信抗BPSK干扰方法 |
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| 引用本文： | 张淑宁,赵惠昌,邓建平.基于平方变换原理的伪码引信抗BPSK干扰方法[J].航天电子对抗,2006,22(3):50-53. |
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| 作者姓名： | 张淑宁 赵惠昌 邓建平 |
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| 作者单位： | 南京理工大学电光学院,南京,210094;南京理工大学电光学院,南京,210094;南京理工大学电光学院,南京,210094 |
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| 摘 要： | 分析了BPSK干扰对伪码引信相关输出的影响,分析发现当干扰强度超过引信抗干扰容限时,其相关输出严重恶化,因此必须采取相应措施对其进行抑制。考虑到BPSK干扰和有用信号之间存在着强的时频耦合,提出采用两次平方变换方法以实现干扰和有用信号的频谱分离,然后再通过传统滤波方法将有用信号提取出来。仿真结果表明该方法可以有效地消除干扰,使相关输出得到显著改善,尤其是对强干扰效果更佳。
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| 关 键 词： | 伪码引信 BPSK干扰 相关输出 干扰抑制 平方变换 |
| 修稿时间： | 2006年1月16日 |
Method of anti-BPSK interference for pseudo-random coded fuze based on square transformation |
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| Zhang Shuning,Zhao Huichang,Deng Jianping.Method of anti-BPSK interference for pseudo-random coded fuze based on square transformation[J].Aerospace Electronic Warfare,2006,22(3):50-53. |
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| Authors: | Zhang Shuning Zhao Huichang Deng Jianping |
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| Abstract: | The effect of BPSK interference on pseudo-random coded fuze system is analyzed.It is found that the correlation output is deteriorated when the interference power is larger than the anti-interference limit of the fuze system.It is very necessary to excise the interference.Considering strong time and frequency coupling between the interference and useful signal,the method of twice square transformation is put forward to separate the interference and useful signal in frequency domain,and then the useful signal is extracted through traditional filtering.Simulation results show that this method can effectively excise noise frequency modulation interference and the correlation output is improved obviously,especially for the strong interference. |
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| Keywords: | pseudo-random coded fuze system BPSK interference correlation output interference excising square transform |
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