| 一种基于降调频的宽带LFM信号DOA估计算法 |
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| 引用本文： | 张佳,贾鑫,尹灿斌,陈颖颖,高阳.一种基于降调频的宽带LFM信号DOA估计算法[J].航天电子对抗,2011,27(4):43-46. |
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| 作者姓名： | 张佳 贾鑫 尹灿斌 陈颖颖 高阳 |
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| 作者单位： | 装备指挥技术学院光电装备系,北京,101416 |
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| 摘 要： | 传统的宽带LFM信号DOA估计算法,是直接对信号进行估计,为满足采样定理,需要很高的采样频率,数据量和运算量巨大。针对这一问题,提出一种基于降调频的宽带LFM信号DOA估计算法,采用基于改进谱形熵的自适应降调频技术,通过若干次降调频,将宽带LFM信号带宽降到接收机可以处理的范围内,再利用窄带LFM信号DOA估计算法估计...
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| 关 键 词： | 谱形熵 降调频 时频分析 DOA |
A wideband LFM signal DOA estimation algorithm based on down-chirp |
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| Zhang Jia,Jia Xin,Yin Canbin,Chen Yingying,Gao Yang.A wideband LFM signal DOA estimation algorithm based on down-chirp[J].Aerospace Electronic Warfare,2011,27(4):43-46. |
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| Authors: | Zhang Jia Jia Xin Yin Canbin Chen Yingying Gao Yang |
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| Institution: | Zhang Jia,Jia Xin,Yin Canbin,Chen Yingying,Gao Yang(Dept.of Photoelectric & Electronic Warfare Equipment,Academy of Equipment Command & Technology,Beijing 101416,China) |
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| Abstract: | The traditional wideband LFM signal DOA estimation algorithms deal with data directly,so they need very high sampling-frequency for sampling theorem,which leads to that the quantity of data and processing is very large.An adaptive down-chirp technology based on Puxingshang is put forward to dispose this problem.Through some times down-chirp,the bandwidth can be down to a narrowband that could be processed by receivers.And then the narrowband algorithm can realize DOA estimation,such time-frequency-MUSIC alg... |
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| Keywords: | Puxingshang down-chirp time-frequency analysis DOA |
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