稀疏点源波束干涉合成建模与特征提取算法

摘要

Based on the principle of spatial power combing from the decentralized array,the concept of effective power point and effective power area was stated.The feature of effective power area was analyzed.By using mathematical morphology method,the quantitative calculation algorithm for the characteristic parameters,such as number,centre of mass,measure of area,and so on,were developed,which could provide the solution for the evaluation of the spatial power combing.%多点源情形下，稀疏阵列波束通过干涉合成后的能量分布受到多种复杂因素影响，难以对交汇区域内功率分布规律进行简单的理论分析。针对这一问题，提出了稀疏点源波束干涉合成模型，阐述了有效功率点与有效功率区的概念。并深入分析有效功率区的特征，借鉴数学形态学的图像处理技术，设计了一套特征提取算法，对有效功率区个数、质心位置、面积、有效点平均间隔等特征参数进行了量化提取。仿真实验表明，该方法可以为分析与评估稀疏阵波束功率合成效果提供解决途径和理论依据。