| 外辐射源雷达参考信号提纯方法 |
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| 引用本文： | 陈刚,王俊,王珏,郭帅,宋海婷,邢玉帅. 外辐射源雷达参考信号提纯方法[J]. 系统工程与电子技术, 2018, 40(1): 45-49. DOI: 10.3969/j.issn.1001-506X.2018.01.07 |
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| 作者姓名： | 陈刚 王俊 王珏 郭帅 宋海婷 邢玉帅 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室, 陕西 西安 710071 |
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| 摘 要： | 在外辐射源雷达中,用于接收直达波信号的参考天线不仅会接收基站的直达信号,同时还会不可避免地接收到经地面建筑等反射的强多路径信号,直接利用参考天线接收的参考信号与目标回波匹配积累会产生额外的检测峰值。针对这个问题,提出了一种该场景下的外辐射雷达参考信号提纯方法。首先,将回波信号投影至参考信号的子空间中提取回波信号中的直达波信号。然后,利用此直达波信号对消参考信号中的干扰获取纯净的参考信号。最后,利用纯净的参考信号与杂波抑制后的目标回波匹配得到检测结果。计算机仿真和理论分析表明,该方法具有较好的参考信号提纯性能。
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Reference signal purifying method in passive bistatic radar |
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| CHEN Gang,WANG Jun,WANG Jue,GUO Shuai,SONG Haiting,XING Yushuai. Reference signal purifying method in passive bistatic radar[J]. System Engineering and Electronics, 2018, 40(1): 45-49. DOI: 10.3969/j.issn.1001-506X.2018.01.07 |
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| Authors: | CHEN Gang WANG Jun WANG Jue GUO Shuai SONG Haiting XING Yushuai |
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| Affiliation: | National Lab of Radar Signal Processing, Xidian University, Xi’an 710071, China |
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| Abstract: | In passive bistatic radar, the reference antenna which is used to receive the direct signal is inevitably contaminated by the strong multipath. The information of the target may be influenced by range-Doppler correlation between the target echo and the contaminated reference signal. Aiming at this problem, a reference signal purifying method in passive bistatic radar is proposed. Firstly, the echo signal is projected into the subspace of the reference signal to get the direct signal in the echo channel. Then, the obtained direct signal is used to cancel the interference in the reference channel. Finally, the purified reference signal is used to add the energy of the target echo by range-Doppler correlation. Simulation and theoretical analysis verify the reference signal purifying performance of the proposed method. |
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