| 一种跳频信号跳周期联合估计算法 |
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| 引用本文： | 易江文. 一种跳频信号跳周期联合估计算法[J]. 科学技术与工程, 2012, 12(6): 1260-1262,1267 |
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| 作者姓名： | 易江文 |
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| 作者单位： | 西南交通大学信息科学与技术学院,成都,610031 |
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| 摘 要： | 针对通信对抗中的实际应用,给出了一种联合算法估计跳频信号跳周期,与传统跳周期估计方法不同,该方法通过对信号进行谱图重排变换,然后提取时频脊线并对其进行小波变换,精确定位跳变时刻,最后得到跳周期的准确估计。仿真结果表明,该方法具有较好的抗噪性能,在信噪比大于-1db时能得到准确的参数估计。
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| 关 键 词： | 跳频 时频重排 小波变换 |
| 收稿时间： | 2011-11-27 |
| 修稿时间： | 2011-12-06 |
A United Method for Hopping duration estimation of Frequency hopping signals |
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| yijiangwen. A United Method for Hopping duration estimation of Frequency hopping signals[J]. Science Technology and Engineering, 2012, 12(6): 1260-1262,1267 |
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| Authors: | yijiangwen |
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| Affiliation: | (College of Information Science and Technology,Southwest Jiaotong University,Chengdu 610031,P.R.China) |
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| Abstract: | To aim at the actual application in communication countermeasure, a united estimation frequency hopping signal algorithm which is different from tradition methods was given. Based on time-frequency reassignment technology, the new algorithm estimate hopping duration accurately by extracting the time-frequency ridge and getting its wavelet transform. Simulation results show that, this method has better anti-noise performance and can get accurate parameter estimation when the signal-to-noise ratio is greater than - 1dB. |
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| Keywords: | frequency hopping time-frequency reassignment wavelet transform |
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