基于多重分形模型的海杂波特性分析与仿真

Sea Clutter Characteristic Analysis and Simulation Based on Multi-fractal Model

在分析实测雷达海杂波数据时域特性的基础上,发现海杂波具有长时相关特性,且在较大的范围内具有尺度不变性,因此,利用多重分形模型可以较好的刻画海杂波的复杂特性。在此基础上,提出一种基于小波多重分形模型的海杂波建模与仿真方法。实验结果表明该方法可以较好的模拟海杂波的统计特性和多重分形特性,并且具有较小的计算量,为雷达海杂波的建模和仿真提供了一条新的思路和有效手段。

When being analyze measured sea clutter, it was found that sea clutter has long-time correlation properties and is scale-invariant in large scales. So, the sea clutter can be modeled through multi-fractal models. Based on this, a wavelet multi-fractal model to model and simulation sea clutter was proposed. Computer simulation shows this method can well simulate the statistic and multi-fractal properties of sea clutter. It also has low computation burden. So, it provides a new idea and method to model and simulation radar sea clutter.