基于区域分解的二维海面生成及多普勒分析

提出一种基于区域分解的二维海面生成方法,将海谱划分为若干个子区域,分区域生成同完整海谱相对应的海面。将加权曲率近似方法与区域分解相结合,计算整幅海面的电磁散射,仿真并分析了L和X波段下海面多普勒谱特性。结果表明,所提出的方法解决了具有庞大采样网格的海面生成和电磁散射计算问题,使得在微波高频段下的粗糙海面多普勒谱仿真仍可在普通微机上实现,且更适应于多线程并行运算。

Domain decomposition based technique for 2-D sea surface generation and Doppler analysis

A domain decomposition based technique for two dimensional (2 D) sea surface generation is proposed, which decomposes the 2 D sea spectrum into multiple blocks and generates sea surfaces corresponding to the complete sea spectrum block by block. The weighted curvature approximation (WCA) method combining with domain decomposition is used in electromagnetic calculation. Doppler spectrum from 2 D sea surfaces at L and X band are simulated and analyzed. Numerical results demonstrate that the proposed technique can deal with the generation of large sea surfaces with huge sampling grid and electro magnetic scattering calculation, and simulation of Doppler spectrum at higher microwave band are available on personal computers and it is more suitable for parallel computing.