| 摘要: |
| 针对噪声环境下的跳频信号，提出了一种基于稀疏分解的时延估计方法。对跳频信号
采用稀疏分解重构进行了研究，在此基础上，在不同天线下对跳频信号分别进行重构，得到
每跳信号对应的载波频率和时间中心，从而估计出跳频信号的时延。仿真结果表明，在信噪
比大于7 dB时，跳频信号的时延估计误差基本趋近于零，验证了时延估计方法的有效性
。 |
| 关键词: 跳频信号 稀疏分解 时延估计 信号重构 |
| DOI： |
|
| 基金项目:总装备部科研项目 |
|
| A novel time delay estimation method of frequency-hopping signals |
| YAN Yun-bin,QUAN Hou-de,CUI Pei-zhang |
| () |
| Abstract: |
| For frequencyhopping (FH) signal, a novel method of time delay estimation (TDE)
is presented in the noise environment. The FH signals are reconstructed by usin
g the method of sparse decomposition, then, the TDE of the same hop is estimated
through the carrier wave and time center of each hop which are obtained when th
e FH signals are reconstructed in the different antenna respectively.
Simulation results demonstrate that the error estimation is near zero when the S
NR is greater than 7 dB,so the TDE method is effective. |
| Key words: frequency hopping signal sparse decomposition time delay estimation signal r
econstruction |
