| 机载雷达自适应发射技术抗相干转发式干扰 |
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| 引用本文： | 姜磊,王彤. 机载雷达自适应发射技术抗相干转发式干扰[J]. 系统工程与电子技术, 2015, 37(4): 789-794. DOI: 10.3969/j.issn.1001-506X.2015.04.11 |
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| 作者姓名： | 姜磊 王彤 |
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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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| 基金项目： | 国家自然科学基金(61372133)资助课题 |
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| 摘 要： | 相干转发式干扰会导致雷达在接收端产生大量虚假目标，降低雷达对真实目标的检测性能。为了解决这个问题，提出一种自适应发射技术对抗相干转发式干扰。该方法首先利用雷达预先发射的高重频脉冲串对转发式干扰进行检测和参数估计；然后在正常工作模式时利用估计得到的干扰参数优化阵列发射方向图，使其在干扰侦察方向形成凹口，从而达到降低干扰机截获雷达发射信号的概率的目的。仿真实验结果证明了所提方法的有效性。
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| 关 键 词： | 机载雷达 相干转发式干扰 自适应发射 半正定规划 |
Airborne radar adaptive transmit technique for anti coherent repeater jammer |
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| JIANG Lei;WANG Tong. Airborne radar adaptive transmit technique for anti coherent repeater jammer[J]. System Engineering and Electronics, 2015, 37(4): 789-794. DOI: 10.3969/j.issn.1001-506X.2015.04.11 |
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| Authors: | JIANG Lei WANG Tong |
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| Affiliation: | National Lab of Radar Signal Processing, Xidian University, Xi’an 710071, China |
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| Abstract: | Coherent repeater jammer (CRJ) may induce many false targets and degrade the true target detection performance. To deal with this problem, an adaptive transmit technique for anti CRJ is proposed. Firstly a burst of high repetition frequency pulse is transmitted to detect and estimate the paramters of CRJ. Then, based on the estimatesd parameters, the array transmit pattern is optimized to place nulls in the direction of jammer, therefore the probability of interception radar transmitted signal can be reduced. Numerical examples are provided to demonstrate the effectiveness of the proposed method. |
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