粗糙海面与其上方多目标复合散射的混合算法

发布时间：2018-08-18 10:10

【摘要】：针对粗糙海面与其上方多目标复合的情形,常用算法存在计算量过大、计算时间太长等缺点,本文采用基尔霍夫近似法与矩量法结合的混合算法可以大大简化计算量、节省时间.本文首先通过蒙特卡罗的方法模拟一维PM粗糙海面,并与粗糙海面上方多目标建立复合模型;然后对矩量法结合基尔霍夫近似法的混合算法做了详细的公式推导,得到了复合散射系数,并且分析了不同入射角、目标高度、目标间距、目标尺寸、风速等参数对复合电磁散射特性的影响.实验结果表明,针对粗糙海面与其上方多目标复合的情形,采用矩量法结合基尔霍夫近似法的混合算法不但可以保证准确性,而且可以大幅度减少计算所用时间(混合算法用时占矩量法的19%),对大尺寸粗糙面和复杂的复合模型优势尤为明显.
[Abstract]:In the case of multi-objective composite of rough sea surface and its upper surface, the common algorithms have the disadvantages of too much computation and too long calculation time. In this paper, the hybrid algorithm combining Kirchhoff approximation and moment method can greatly simplify the computational complexity. Save time. In this paper, the one-dimensional PM rough sea surface is simulated by Monte Carlo method, and a composite model is established with multiple targets above the rough sea surface, and then the hybrid algorithm of the method of moments and Kirchhoff approximation is derived in detail. The effects of different incident angles, target height, target spacing, target size and wind speed on the electromagnetic scattering characteristics are analyzed. The experimental results show that the hybrid algorithm based on moment method and Kirchhoff approximation can not only ensure the accuracy of the rough sea surface with multiple targets above it. Moreover, the computation time can be greatly reduced (the hybrid algorithm takes 19% of the moment method), especially for the large size rough surface and complex composite model.
【作者单位】：哈尔滨工程大学自动化学院;
【基金】：国家自然科学基金(批准号:51307026) 黑龙江省科学基金(批准号:E201347) 哈尔滨市科技创新人才研究专项基金(批准号:RC2015QN020027)资助的课题~~
【分类号】：TN011

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