目标瞬态回波极点提取研究

Research for Extracting Poles from Transient Echo of Target

本文首先简要介绍了“奇异点展开理论”,然后在此理论的基础上应用Prony方法从模拟的目标瞬态回波中提取了极点,并将在不同采样频率、不同样本数,不同预设极点数和不同信噪比条件下得到的极点与极点预设值进行了比较,得到了极点的准确提取与这些参数间的依赖关系.本文的结果可供在实际声呐波回波中提取极点,进而实现目标识别时参考.

The singularity expansion theory is introduced briefly.Based on this theory, Prony method is used to extract the poles from simulated target transient echo, and compared prediction values with those poles obtained in different sampling frequncy, signal-noise ratio, the number of samples and the number of poles.The relation between the extraction of poles and the paramaters above is obtained.The results can be applied to the extraction of poles and the identification of some target from the real sonar echo.