Study on the Composite EM Scattering from Sea Surface with Ship Based on Kd-Tree Accelerated Hybrid Model

Table 1

Calculation time of the scattering of the pure ship for the different methods.

The number of patches on ship	Calculation time (sec.)		Efficiency (improved one/original one)
	Original method	Improved method
4340	6.562	2.09	3.14
9576	9.013	2.635	3.42
27527	35.90	12.37	2.90

Calculated by a computer with Intel(R) Core(TM) i7-6700 CPU @ 3.40 GHz.