|
| 引用本文： |
-
周露,吴潜,罗朝洪.一种新的跳频信号跳速盲估计算法[J].电讯技术，2008，48（8）： - . [点击复制]
- .A Novel Blind Estimation Algorithm of Hop Rate for Frequency Hopping Signals[J].，2008，48（8）： - . [点击复制]
|
|
| |
|
|
| 本文已被：浏览 2720次 下载 66次 |
码上扫一扫！ |
| 一种新的跳频信号跳速盲估计算法 |
|
|
|
| () |
|
| 摘要: |
| 提出一种全新的跳速估计联合算法,即将数据在相位微商快速傅里叶变换(PDFFT)前期处理的基础上,再进行差分处理,最后利用最小二乘(LS)法进行线性拟合最终估计出跳速。仿真结果表明,该算法计算量远小于传统的短时哈特莱变换、小波变换和魏格纳分布(WVD)系列,略大于短时傅里叶变换;在估计精度上与前3种方法相当却远高于后者,因而该法很适合实时跳频信号分析。 |
| 关键词: 跳频通信,信号分析,跳速估计,相位微商快速傅里叶变换,盲估计算法 |
| DOI： |
|
| 基金项目: |
|
| A Novel Blind Estimation Algorithm of Hop Rate for Frequency Hopping Signals |
|
| () |
| Abstract: |
| The commonly used techniques for estimating hop rate are short time Hartley transform, wavelet-transform and WVDs (including WVD, PWVD and SPWVD). Though they can achieve high accuracy, they are unpractical because of their computational burdens. On the other side, the short-time Fourier transform (STFT) is more efficient, but its accuracy can not be satisfying. Taking these into account, a novel method based on the Phase Derivative FFT-Least Square is proposed to balance the problem of accuracy and efficiency.Simulations show that this method can exactly and efficiently estimate the hop rate of real frequency hopping signals. |
| Key words: frequency hopping communication,signal analysis,hop rate estimation,phase derivative FFT,blind estimation algorithm |
|
|
|
|
|
《电讯技术》编辑部 