Almost Cyclostationary Weaken Signal LSFD Estimating Under Stronger Interference

YU Guo-wen; WANG Hong-yuan

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Almost Cyclostationary Weaken Signal LSFD Estimating Under Stronger Interference

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- Almost Cyclostationary Weaken Signal LSFD Estimating Under Stronger Interference
- Acta Electronica Sinica Vol. 34, Issue 6, Pages: 1008-1011(2006)
- 作者机构：
  
  华中科技大学数字视频与通信中心,湖北,武汉,430074
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN929.533
- Published：2006
- 稿件说明：
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YU Guo-wen, WANG Hong-yuan. Almost Cyclostationary Weaken Signal LSFD Estimating Under Stronger Interference[J]. Acta Electronica Sinica, 2006, 34(6): 1008-1011.
DOI：

YU Guo-wen, WANG Hong-yuan. Almost Cyclostationary Weaken Signal LSFD Estimating Under Stronger Interference[J]. Acta Electronica Sinica, 2006, 34(6): 1008-1011. DOI：

摘要

强干扰和低信噪比环境下

根据接收信号循环平稳特性

本文提出一种基于周期时间平均的正弦信号检测和频率线性估计算法(LSFD)

可以准确估计信号频率

有效抑制干扰和噪声

且具有盲性.计算机仿真结果证明了LSFD算法的正确性

其弱信号检测性能优于FFT算法

收敛速度优于循环相关系数算法.

Abstract

A novel weaken signal detecting and frequency estimating blindly algorithm (LSFD) based on period-time-average is proposed according to the cyclostationary under stronger interference.LSFD algorithm can estimate signal frequency correctly

and restrict interference and noise effectively than FFT.The analysis and simulation results show that LSFD algorithm is blindly

and faster than correlation method.

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