中文摘要：

研究了球形目标之间的电磁相互作用，得到了目标二次散射场的表达式，给出了目标的复合散射场以及双站复合散射截面，并在Ku波段进行了数值仿真．结果表明：目标的尺寸对前向散射和后向散射均有较大的影响，周围目标的影响呈现出一定的周期性，二次散射随着目标间距的增大而减小，周围目标离前向散射方向越近，对前向散射的影响也越大．目标的二次散射场与一次散射场强度之比在10^-4数量级以上．在研究多粒子的相互影响时，周围的粒子可近似看作尺寸一定的粒子．利用所得结果以及坐标变换可以研究三维体系内粒子间的电磁相互作用．

英文摘要：

The electromagnetic interaction between spherical targets is researched. The second scattering field for a target is derived in detail. The complex scattering field and the bistatie radar cross section are presented respectively. The simulation results in Ku wave band show that the size of the principal target affects greatly both the forward and the backward scattering. The influence of the surrounding targets shows definite periodicity. The secondary scattering field diminishes with the increase of distance between the two targets. The nearer to the forward area the surrounding target is, the bigger its affect. The magnitude of the secondary scattering field is about 10^-4 that of the first scattering field. The size of surrounding particles can be considered as stable and uniform when researching the electromagnetic interaction. This kind of interaction in three dimensions can be investigated easily by using the obtained result and coordinate transformation.