相位相关技术研究

A New Method of Phase Correlation for Signal Processing

首先对传统的相关过程进行了分析 ,在此基础上提出了一种利用信号的相位信息进行相关的新方法 ,这种方法对于相关性能很差的单频正弦信号 ,也能获得类似冲击函数的相关特征 ,因此特别适用于正信噪比条件下脉冲到达时间的精确估计。为了验证所提出技术的有效性 ,除了使用仿真数据外 ,还使用了外场试验中的实测数据。分析结果表明 ,所提出的技术对于正弦等窄带信号具有优异的相关性能。

The traditional procedure of signal correlation is analyzed firstly. On this basis, a new method of phase signal correlation is proposed. The new method can achieve a more excellent correlative performance for the general sine signal which has a poor correlative performance compared with the traditional correlation technique. In order to verity the practicability of the new method, both simulated data and experimental data are used. The analytical results show a good correlative performance for the narrow-band signal such as a sine signal.