| 引用本文: | 张娟，丁彤，张林让，张政和. 宽带双基地雷达高速多目标检测方法[J]. 雷达科学与技术, 2021, 19(5): 526-533.[点击复制] |
| ZHANG Juan, DING Tong, ZHANG Linrang, ZHANG Zhenghe. High-Speed Multi-Target Detection Method for Wideband Bistatic Radar[J]. Radar Science and Technology, 2021, 19(5): 526-533.[点击复制] |
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| 摘要: |
| 本文提出一种宽带双基地雷达高速多目标检测算法。针对目标高速运动产生的尺度因子和脉内多普勒，本文设计出一种新的匹配滤波器，避免了脉压失配现象的产生，然后根据匹配滤波结果提出改进的广义Radon傅里叶变换算法，对运动参数的多维搜索同时补偿脉内多普勒，从而获得相参积累峰值，不同峰值所对应的各阶参数即为不同目标的等效运动参数估计值，最后对补偿后的相参积累结果进行恒虚警检测处理，实现对高速目标的检测与参数估计。仿真结果表明，本文方法可有效消除脉内多普勒带来的匹配滤波损失，实现宽带雷达体制下高速目标的相参积累，从而验证了所提算法的有效性。 |
| 关键词: 宽带雷达 高速目标检测 脉内多普勒 广义Radon傅里叶变换 |
| DOI：DOI:10.3969/j.issn.1672-2337.2021.05.008 |
| 分类号:TN957 |
| 基金项目:国家自然科学基金(No.61971329)；西安电子科技大学研究生创新基金 |
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| High-Speed Multi-Target Detection Method for Wideband Bistatic Radar |
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ZHANG Juan, DING Tong, ZHANG Linrang, ZHANG Zhenghe
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National Key Lab of Radar Signal Processing, Xidian University, Xi'an 710071, China
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| Abstract: |
| A novel high-speed multi-target detection algorithm for wideband bistatic radar is proposed. Aiming at the scale factor and intra-pulse Doppler generated by the target’s high-speed motion, a generalized matched filter is designed to avoid the mismatch effect. The improved generalized Radon Fourier transform is defined and performed to search for multi-dimensional motion parameters and compensate intra-pulse Doppler at the same time. Multiple pulses are integrated coherently, and the accumulated peak value is obtained. The parameters corresponding to different peaks are the equivalent motion parameter estimation results of different targets. Finally, high-speed multi-target detection and parameter estimation are performed. The simulation results show that the proposed algorithm can effectively eliminate the matched filter loss caused by intra-pulse Doppler and realize the coherent integration of high-speed targets in the wideband bistatic radar system, thus verifying the effectiveness of the proposed algorithm. |
| Key words: wideband radar high-speed target detection intra-pulse Doppler compensation generalized Radon Fourier transform |
