| 机载雷达微弱目标帧间非相参积累与检测技术 |
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| 引用本文： | 王宁,孟晋丽,刘国庆,杨予昊,孙俊. 机载雷达微弱目标帧间非相参积累与检测技术[J]. 信号处理, 2021, 37(2): 248-257. DOI: 10.16798/j.issn.1003-0530.2021.02.010 |
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| 作者姓名： | 王宁 孟晋丽 刘国庆 杨予昊 孙俊 |
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| 作者单位： | 南京电子技术研究所 |
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| 基金项目： | 国家自然科学基金（U19B2031） |
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| 摘 要： | 微弱目标探测一直是机载雷达,尤其是机载预警雷达面临的重要挑战.针对这一问题提出一种目标帧间非相参积累和检测方法.首先,建立了机载雷达多帧信号采用不同载频和脉冲重复周期场景下的回波信号模型.其次,提出了一种运动目标帧间多普勒校正和距离单元走动补偿方法,使得经过处理后的目标在不同帧数据中位于相同待检测单元.然后,为了避免强...
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| 关 键 词： | 机载雷达目标检测 距离解模糊 检测前跟踪 帧间非相参积累 |
| 收稿时间： | 2020-09-24 |
Airborne Radar Weak Target Interframe Noncoherent Integration and Detection Method |
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| Affiliation: | Nanjing Research Institute of Electronics TechnologyKey Laboratory of Intellisense Technology, CETC |
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| Abstract: | Weak target detection has always been an important challenge for airborne radar, and a target interframe noncoherent integration and detection method is proposed in this paper. Firstly, the airborne radar signal model when multiple frames using different carried frequencies and pulse repetition interval is build. Secondly, a method of the moving target Doppler correction and the range migration compensation is proposed, which makes the target between different frames in the same cell to be detected. Then, the strong targets are detected and deleted, range cycle expansion is used to resolve range ambiguity, and interframe noncoherent integration is applied. After processing by the proposed method, the detection performance for weak target is improved. Finally, simulation result is given to prove the effectiveness of the proposed algorithm. |
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