| 引用本文: | 沙志超,盛卫东,徐湛,等.运用改进正交匹配追踪算法精确估计跳频信号跳变时刻.[J].国防科技大学学报,2016,38(2):107-111.[点击复制] |
| SHA Zhichao,SHENG Weidong,XU Zhan,et al.Hop timing precise estimation for frequency-hopping signals based on improved orthogonal matching pursuit algorithm[J].Journal of National University of Defense Technology,2016,38(2):107-111[点击复制] |
|
| |
|
|
| 本文已被：浏览 8421次 下载 6023次 |
| 运用改进正交匹配追踪算法精确估计跳频信号跳变时刻 |
| 沙志超, 盛卫东, 徐湛, 李骏 |
|
(国防科技大学 电子科学与工程学院， 湖南 长沙 410073)
|
| 摘要: |
| 现有方法得到的跳变时刻精度不高、抗干扰能力较弱，为此提出一种运用改进正交匹配追踪算法的跳变时刻精确估计方法。根据跳频信号原理建立跳变时刻估计的稀疏表示模型，用改进正交匹配追踪算法求解该模型，获取跳变时刻。理论分析和仿真结果证明该方法能够获取高精度的跳变时刻，估计性能方面优于现有算法。 |
| 关键词: 跳频信号 稀疏重构 时频分析 正交匹配追踪 |
| DOI：10.11887/j.cn.201602018 |
| 投稿日期：2015-03-13 |
| 基金项目:国家自然科学基金资助项目（61302141） |
|
| Hop timing precise estimation for frequency-hopping signals based on improved orthogonal matching pursuit algorithm |
| SHA Zhichao, SHENG Weidong, XU Zhan, LI Jun |
|
(College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China)
|
| Abstract: |
| The hop timing estimates derived from existing methods are coarse and unreliable, therefore, a novel method for estimating hop timing for frequency-hopping signals precisely was proposed based on an improved orthogonal matching pursuit algorithm. The sparse representation model for hop timing estimation was established according to the principle of frequency-hopping signals. Then, the improved orthogonal matching pursuit algorithm was used to solute the model and get hop timing finally. The theoretical analysis and simulation results verified that the method is capable of obtaining precise hop timing, and is better than current methods. |
| Keywords: frequency-hopping signals sparse reconstruction time-frequency analysis orthogonal matching pursuit |
|
|
