| 基于时延的宽带LFM信号DOA估计算法 |
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| 引用本文： | 张奎,罗景青,汪华兴.基于时延的宽带LFM信号DOA估计算法[J].火力与指挥控制,2012,37(6):92-95. |
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| 作者姓名： | 张奎 罗景青 汪华兴 |
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| 作者单位： | 解放军电子工程学院,合肥,230037 |
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| 摘 要： | 针对常用宽带LFM信号DOA估计算法采样数据量大、运算量大的特点,提出了一种基于时延的宽带LFM信号DOA估计算法。先把阵元接收到的信号变换到频域,而后用极值频率点进行时延估计,并对各极值频率点的时延估计值进行加权平均,进而估计出宽带LFM信号的来波方位。仿真验证了该算法的合理性和有效性。
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| 关 键 词： | 宽带信号 极值频率点 DOA估计 |
Wideband LFM Signal DOA Estimation Algorithm Based on Time-Delay |
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| ZHANG Kui
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LUO Jing-qing
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WANG Hua-xing.Wideband LFM Signal DOA Estimation Algorithm Based on Time-Delay[J].Fire Control & Command Control,2012,37(6):92-95. |
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| Authors: | ZHANG Kui LUO Jing-qing WANG Hua-xing |
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| Institution: | (Electronic Engineering Institute of PLA,Hefei 230037,China) |
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| Abstract: | As the traditional DOA estimation algorithm of wideband LFM signal has the weakness of large sampling value and caculating amount,a wideband LFM signal DOA estimation algorithm based on time-delay is proposed in this paper.Firstly,the signals received by the array are transformed into frequency domain.Then,the time-delay between the baseline is estimated using the extreme frequency point and the weighted mean is got.The DOA estimation of wideband LFM signal is got through the time-delay.Its effectiveness and correctness are verified by computer simulations at last. |
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| Keywords: | wideband signal extreme frequency point DOA estimation |
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