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| 相位拟合法在推算调频信号瞬时频率中的应用 | |
| 引用本文： | 刘宏,杜文超,高学强.相位拟合法在推算调频信号瞬时频率中的应用[J].导弹与航天运载技术,2005(4):38-42. |
| 作者姓名： | 刘宏 杜文超 高学强 |
| 作者单位： | 1. 海装天津局驻北京地区特种导弹军代表室,北京,100076 2. 海装天津局驻北京地区特种导弹军代表室,北京,100076;海军航空工程学院研究生队,烟台,264001 3. 海军航空工程学院研究生队,烟台,264001 |
| 摘 要： | 采用曲线拟合的方法来拟合信号的相位,目的是通过信号的相位曲线求出信号的瞬时频率,并根据文章中采用的算法对线形调频信号、正弦调频信号、混合调频信号、幂律调频信号4种调频信号的瞬时频率进行测量,取得了理想效果,仿真试验证明该方法有效. |
| 关 键 词： | 信号处理 时频分析 调频信号 瞬时频率 频率估计 |
| 文章编号： | 1004-7182（2005）04-0038-05 |
| 收稿时间： | 2004-10-12 |
| 修稿时间： | 2004年10月12 |
Application of Phase Approaching in Caculating Instantaneous Frequency of Frequency Modulated Singal |
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| Liu Hong,Du Wenchao,Gao Xueqiang.Application of Phase Approaching in Caculating Instantaneous Frequency of Frequency Modulated Singal[J].Missiles and Space Vehicles,2005(4):38-42. | |
| Authors: | Liu Hong Du Wenchao Gao Xueqiang |
| Abstract: | This paper uses the curve fitting to approach the signal phase, calculating instantaneous frequency of signal by its phase curve. According to the presented method, instantaneou frequencies of four kinds of modulated signals including linear frequency modulated signal, sinusoid frequency modulated signal, mixed frequency modulated signal and power frequency modulated signal, are measured respectively. And its effect is very ideal. The simulation experiment has proved the effectiveness of this method. |
| Keywords: | Signal processing Time-frequency analysis Frequency modulated signal Instantaneous frequency Frequency estimation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |