| 改进的相位建模法在瞬时频率估计中的应用 |
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| 引用本文： | 刘潮,李政杰,童宁宁.改进的相位建模法在瞬时频率估计中的应用[J].航天电子对抗,2011,27(3):23-25,50. |
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| 作者姓名： | 刘潮 李政杰 童宁宁 |
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| 作者单位： | 空军工程大学导弹学院,陕西,三原,713800 |
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| 摘 要： | 瞬时频率估计是非平稳信号分析的重要内容.相位建模法估计瞬时频率的精度高、抗噪性能好,但是计算复杂,在工程上难以实时实现,限制了其进一步发展.先介绍了瞬时频率的定义和相位建模法,然后针对传统相位建模法存在的计算复杂的问题提出了改进的相位建模法,并进行了仿真分析.结果证明,在保证精度的前提下,该改进算法有效地简化了计算.
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| 关 键 词： | 瞬时频率 相位建模法 脉内分析 |
The application of advanced phase modeling method in instantaneous frequency estimation |
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| Liu Chao,Li Zhengjie,Tong Ningning.The application of advanced phase modeling method in instantaneous frequency estimation[J].Aerospace Electronic Warfare,2011,27(3):23-25,50. |
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| Authors: | Liu Chao Li Zhengjie Tong Ningning |
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| Institution: | Liu Chao,Li Zhengjie,Tong Ningning(Missile Institute of Air Force Engineering University,Sanyuan 713800,Shanxi,China) |
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| Abstract: | As an important part of non-stationary signal analysis,the instantaneous frequency(IF) estimation plays an important role in many signal processing areas.Estimating IF by phase modeling has a high precision and a good anti-noise ability.But for being complex in calculation and difficult in implementing in project at real time,it is seldom used.Firstly the definition of instantaneous frequency and traditional phase modeling method(TPM) are introduced,and then the advanced phase modeling method to solve the p... |
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| Keywords: | instantaneous frequency phase modeling intra-pulse analysis |
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