CAJ | 학술논문

现代化舰船上装备有大量的电子系统和设备，研究舰船电磁环境对舰船电磁兼容性及其防御力的提高具有重要意义。首先用简单模型验证物理绕射理论（PTD）在计算目标的散射场时能够计算目标阴影区及边缘绕射场。进而采用物理光学法（PO）与 PTD相结合的方法计算舰船周围电场强度，并结合美军标MIL-STD-461C，针对电磁辐射对舰船的危害进行初步预估，得出电磁辐射对舰船的危害区域以及对人员的危害区域，且舰船上层建筑所受电磁辐射危害较大。结合几何绕射理论（GTD），计算出从源点到达桅杆处观察点的射线路径，得到引起舰船上层建筑电磁辐射危害较大的原因是电磁波从源点辐射到舰船结构时，在舰船表面发生了多次反射及绕射。结合3种算法研究舰船电磁环境，对于研究舰船电磁兼容具有重要的参考价值。
현대화함선상장비유대량적전자계통화설비，연구함선전자배경대함선전자겸용성급기방어력적제고구유중요의의。수선용간단모형험증물리요사이론（PTD）재계산목표적산사장시능구계산목표음영구급변연요사장。진이채용물리광학법（PO）여 PTD상결합적방법계산함선주위전장강도，병결합미군표MIL-STD-461C，침대전자복사대함선적위해진행초보예고，득출전자복사대함선적위해구역이급대인원적위해구역，차함선상층건축소수전자복사위해교대。결합궤하요사이론（GTD），계산출종원점도체외간처관찰점적사선로경，득도인기함선상층건축전자복사위해교대적원인시전자파종원점복사도함선결구시，재함선표면발생료다차반사급요사。결합3충산법연구함선전자배경，대우연구함선전자겸용구유중요적삼고개치。
Research on the electromagnetic environment on ships that are mounted with many electric sys?tems and equipment are of vital importance on improving the electromagnetic compatibility and protection capability. First,the physical theory of diffraction(PTD)algorithm is verified with simplified models, which can be used to calculate the target shaded area and edge diffraction field when calculating the scattered field. Then,the physical optics(PO)and PTD are combined to calculate the field around the ship illuminat?ed by electromagnetic waves. Next,the results are compared to the MIL-STD-461C standard, and the haz?ard areas of the ship are estimated, revealing that the superstructure is the major hazard area. Finally, the ray tracing from the source to the view point beside the mast is obtalned with the method of geometrical theory of diffraction(GTD),which successfully explalns the potential threat of superstructures: the electromagnetic wave that impinges on the structure of the ship will be repeatedly reflected. In brief, the combination of a va?riety of algorithms for the studying of the ship electromagnetic compatibility has a great significance.