海杂波数据的多重分形谱分析

由于海杂波的复杂多变性,多重分形谱被用来分析舰载雷达海杂波数据。从距离向观察纯净的海杂波数据,把有完整起伏的波包作为一个分析单元,通过单独和组合的方式进行多重分形谱分析,谱曲线均表现出很强的相似性。使用分段谱分析和整帧谱分析方法对复杂背景环境(包含人工目标和地杂波)中的海杂波进行研究,表现出与纯净海杂波不同的特性,可用于海杂波仿真和抑制。

Multifractal Spectrum Analysis of Sea Clutter Data

The sea clutter data of shipborne radar is analyzed by multifractal spectrum because of the complexity of sea clutter. Observing the echo data containing only sea clutter at the range direction, the envelope including complete ups and downs is a unit analyzed alone and in group, as a result the curves of multifractal spectrum are very similar. The artificial target and ground clutter are added to the previous sea clutter data, they all exhibit different properties from the data containing only sea clutter through analyzing the spectrum of every segment and the whole frame, which can be used to simulate and restrain sea clutter.