| 基于确知波形的宽带宽角相控阵发射波束形成方法 |
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| 引用本文： | 罗永健,俞根苗,张守宏,朱敏. 基于确知波形的宽带宽角相控阵发射波束形成方法[J]. 电子学报, 2003, 31(3): 358-360 |
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| 作者姓名： | 罗永健 俞根苗 张守宏 朱敏 |
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| 作者单位： | 1. 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;2. 解放军西安通信学院,陕西西安 710106 |
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| 基金项目： | 国防科技预研基金 (No 99J7 1 1 DZ0 1 1 6) |
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| 摘 要： | 在大孔径宽扫描角情况下,利用窄带相控阵发射不出去宽带高分辨信号,本文经理论分析说明了这一点,并提出两种基于已知波形的宽带宽角相控阵发射波束形成方法,给出了实现示意框图,通过计算机仿真验证了其可行性.新方法采用时域数字处理,在性能上是最优的.与时域采用抽头延迟线的FIR滤波器波束形成方法和频域DFT波束形成方法相比,文中方法简单,所需设备量少,易于工程实现.
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| 关 键 词： | 宽角 宽带波束形成 相控阵 |
| 文章编号： | 0372-2112(2003)03-0358-03 |
Wideband Transmitting Beamforming for Phased Array Based on Known Waveform in the Presence of Large Scan Angle |
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| LUO Yong-jian ,,YU Gen-miao ,ZHANG Shou-hong ,ZHU Min. Wideband Transmitting Beamforming for Phased Array Based on Known Waveform in the Presence of Large Scan Angle[J]. Acta Electronica Sinica, 2003, 31(3): 358-360 |
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| Authors: | LUO Yong-jian YU Gen-miao ZHANG Shou-hong ZHU Min |
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| Affiliation: | 1. National Key Lab of Radar Signal Processing,Xidian University,Xi'an,Shaanxi 710071,China;2. Xi'an Communications Institute,Xi'an,Shaanxi 710106,China |
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| Abstract: | Theoretical analysis demonstrates that wideband signal can not be transmitted by using narrowband phased array in scenarios with large aperture and scan angle.Two wideband transmitting beamforming methods for phased radar based on the known waveform in the presence of large scan angle are proposed.The diagrams are given,and simulation results show the effectiveness of two methods.The novel methods employ digital processing in the time domain and are optimal.Compared with the beamforming method utilizing FIR filter consisting of tapped delay lines in the time domain and the beamforming technique with DFT in the frequency domain,the presented methods demand the smaller number of equipment and are easy to be implemented in engineering. |
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| Keywords: | large scan angle wideband beamforming phased array |
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