为充分描述海杂波时变特性和局部奇异性，将多重分形理论应用到雷达海杂波特性分析中，理论分析了海杂波的多重分形参数，并进一步分析了实测海杂波数据的多重分形谱、质量指数和奇异指数，结果表明海杂波具有明显的多重分形特性，该分析方法可以很好地解释海杂波内在非线性特性，并比传统的统计特性分析方法更加能确切地描述杂波的产生机理，为基于多重分形特性的雷达目标检测提供了依据。

In order to fully describe the time-varying characteristic of the sea clutter and its local singularity, the multifractal theory is introduced to the analysis of radar sea clutter. The multifractal parameters of sea clutter are extracted theoretically, analyses the multifractal spectrum, quality index and singularity index of measured sea clutter data are analysed. The results show that the sea clutter has the characteristics of multifractal features and it can well explain its inherent nonlinear characteristics. Compared with the traditional statistical method, the multifractal analysis method is more accurate than the traditional method in describing the generation mechanism of sea clutter, which provides a basis for radar target detection based on multifractal theory.

TN959.1

国家自然科学基金资助项目