基于道格拉斯改进的雷达回波数据简化算法

Simplifying Radar Echo Simulation with Improved Douglas-Peucker Algorithm

为提高雷达模拟器生成物标回波的效率,提出一种基于道格拉斯改进的雷达回波数据简化算法。首先,提取电子海图岸线数据,分析人工岸线和自然岸线的特征;其次,对数据进行预处理,去除冗余点;随后,通过提取岸线数据特征点,将岸线按特征点分段;最后,基于改进的道格拉斯算法,设置压缩比自适应控制各分段的简化阈值,实现各分段数据的简化。经实验验证,该方法能够有效保持岸线地貌特征,并可达到简化的效果。

An improved Douglas-Peucker algorithm is proposed to reduce the amount of work to paint the radar echo of shorelines on simulator screens. The shoreline data are extracted from electronic charts. The data are preprocessed to dis- tinguish artificial from natural shorelines according to their characteristics and to remove redundant points. The processed shoreline is segmented according to the feature points. The shoreline data are finally processed according to set compression ratio by an Douglas-Peucker algorithm with segment adaptive threshold control to form an compressed shoreline data set. Experimental results show that the proposed method can effectively reduce the volume of data while keeping the shape of shorelines satisfactorily.